UNCLASSIFIED AEEW-R 2591 NEACRP-A-995 NEACRP-L-324...NMAT 2 1 NMESH 2 NREGION 2 NREACT - (number of edits) PREOUT INITIATE AEEW-R 2591 MATERIAL 1 -1 303 1 3001 0.04 2235 O.6002 MATERIAL2

UNCLASSIFIED

AEEW-R 2591 NEACRP-A-995 NEACRP-L-324

NEACRP - THERMAL FISSION PRODUCT BENCHMARK

M J HALSALL C J TAUBMAN

R e a c t o r P h y s i c s Methods Group R e a c t o r P h y s i c s D i v i s i o n W i n f r i t h Technology C e n t r e

September I989

CONTENTS

SUMMARY

1 . Objective

2. Participants

3. Results

4. Comments on Results

Tables and graphs - contents

Tables

Key to graphs

Graphs

AEEW-R 2591

S U M M A R Y

The o b j e c t i v e o f t h e t h e r m a l f i s s i o n p r o d u c t benchmark was t o c o a p a r e t h e r a n g e o f f i s s i o n p r o d u c t d a t a i n u s e a t t h e g r e s e n t t i m e .

A s i m p l e homogeneous p r o b l e m was s e t w i t h 200 a t o m s H / 1 a tom U235, t o b e b u r n t up t o 1000 d a y s and t h e n d e c a y f o r 1000 d a y s . The p r o b l e m was r e p e a t e d w i t h 200 a t o m s H/1 a t o r , Pu239 , 20 a t o m H / 1 a tom U235 and 20 a t o m s H / 1 a tom Pu239.

T h e r e were t e n p a r t i c i p a n t s a n d t h e s u b m i s s i o n s r e c e i v e d a r e d e t a i l e d i n t h i s r e p o r t .

The benchmark a i m s were o n l y p a r t i a l l y s u c c e s s f u l f o r two r e a s o n s . F i r s t l y t h e v a r i o u s c o d e s u s e d by t i e p a r t i c i p a n t s w e r e n o t a l w a y s c a p a ; ) i e o f d e p l e t i n g a ' s i m p l e ' homogeneous p r o b l e x . S e c o n d l y d i f f e r e n c e s i n t h e b a s i c n u c l e a r d a t a ( i e h y d r o g e n s c a t t e r i n g l aw d a t a ) were n o t a l w a y s n e g l i z i b l e compared w i t h t h o s e i n t h e f i s s i o n p r o d u c t d a t a t h e m s e l v e s .

AEEW-R 2591

UNCLASSIFIED

NEACRP THERMAL FISSION PRODUCT BENCHMARK

1 . OBJECTIVE

The object is to compare data sets for fission products with the WIMS 85 library, and hence indirectly with the experimental results reported by the UK at the 1986 meeting of ?iEACRP.

Composition

Burnup

Control

Edit

a - Minimum data

Recommended Data

Possible Extensions

600 MW/te U235 for 1000 days 0.0 MGi/te U235 for 1000 days (to model decay)

k-infinity (zero buckling)

at 0 , 10, 500, 1000, 2000 days (0, 6, 300, 600 GWd/te)

k-infinity, fractional absorptions in U235, U235, H , Xe135, other fission products

NumSer densities of all nuclides modelled relative to initial U235 density. Absorption rates (relative to a total of 1.0) of all nuclides above and below 4 eV.

Repeat as above wit!l Pu239 in place of U235.

Repeat with 20 atoms H/fissile atom

Notes

* 1. Participants should use their own methods and cross section libraries (but see note 3)

2. For codes not adapted to homogeneous depletion calculations (including WIMSD) the problem may be simulated by a cylindrical fuel zone surrounded by a thin annulus of hydrogen. UIMSD data for such a case takes the following form:

CELL 6 SEQUENCE 1 NGROUP (number of groups) NMAT 2 1 NMESH 2 NREGION 2 NREACT - (number of edits) PREOUT INITIATE

AEEW-R 2591

MATERIAL 1 - 1 303 1 3001 0.04 2235 O.6002 MATERIAL2 - 1 300 3 3001 0.04 ANNULUS 1 1 .0 1 ANNULUS 1 1.0001 2 MESH 1 1 FEWGROUPS (library group partition) POWERC 1 600 10 1 BEGIN

edit data BEG1I.I

etc

Energy per fission values are:

U235 201.7 MeV or 1.946 1 0 1 ~ o u l e s / m o l e Pu239 210.0 MeV or 2.026 1013 joules/mole

Participants using libaries wit:? different values should adjust the rating (600 M'r\'/te) in proportion to ensare consistency in the number of fissions. .I As a purely fissile fuel burns out, the flux needs to rise rapidly to maintain a specified rating. Participants using a code (such as WIKS) that normalises flux to input rating at specified time intervals, should therefore ensure that those intervals are short enough that changes of flux fro3 one step to the next are 'small'.

PARTICIPANTS

Ten subaissions were received.

1 . - AEEiu; C J Taubman UK Atomic Energy Authority, Winfrith

WIMSD

WIMS 1986 nilclear data library

14 fast groups (equal ietharzy intervals of 0.5 in the range 10 MeV - 9.118 KeV)

* 13 resonance groups (9.118 KeV - 4 eV. Isotopes with significant resonance behaviour have effective resonance integrals tabulated in each group as a function of effective potential scattering cross section and temperature)

42 thermal group. (4 eV - 0. Energy boundaries chosen to ensure adequate definition of neutron captures in P u ~ ~ ~ resonance at 0.29 eV, and the P u Z L O resonance at 1.0 eV)

Cross sections derived primarily fron UKAEA Nuclear Data Library, with 14 from the JEF-1 library.

AEEW-R 2591

2 . A N L - E M P e n n i n g t o n Argonne N a t i o n a l L a b o r a t o r y

EPRI-CELL f o r 1000 day b u r n u p s ( = G A M TXERNOS, CINDER)

O R I G E N f o r 1000 day d e c a y s

U 2 3 5 and P u Z 3 ' ENDF/B-IV F r e e g a s v e r s i o n o f H a t 300 '

5 day t i m e s t e p s

68 g r o u p f a s t l i b r a r y w i t h 1X l e t h a r g y w i d t h g r o u p s

R e s o n a n c e c a l c u l a t i o n s i n v o l v i n g t a b l e l o o k u p s

35 g r o u p t h e r m a l l i b r a r y

3 . AAEC - C- S Rob inson A u s t r a l i a n A t o m i c E n e r g y Commiss ion , L c c a s H e i g h t s

M I R A N D A - c a l c u l a t e s s h i e l d e d g r o u p c r o s s s e c t i o n s f rom r e s o n a n c e s u b - g r o u p p a r a m e t e r s , a n d c a l c u l a t e s s p e c t r u m .

C H A R s o l v e s n u c l i d e b u r n u p e q u a t i o n s

D a t a f r o m 2 0 0 n e u t r o n g r o u p AUS l i b r a r y i n c l u d e s : H ( i n F i , O ) , UZ3', U 2 3 5 , U 2 3 6 , U 2 3 8 and p U 2 3 9 + p . a 2 + 2 f rom EXDF/B-IV a c t i n i d e s , f i s s i o n p r o d u c t s and y i e l d s f rom ENDF/B-V.

R e s o n a n c e s h i e l d i n g d a t a f o r a l l a c t i n i d e s f rom ENDF/B-IV

A l l E N D F / B - V d a t a u n s h i e l d e d .

Normal ly 45 f i s s i o n p r o d u c t s p l u s a p s e u d o f i s s i o n p r o d u c t - h a v e a d d e d G d I s 5 t o g e t a c c e p t a b l e r e s u l t s a f t e r 1000 day d e c a y .

4. JAERI H Takano J a p a n Atomic Energy R e s e a r c h I n s t i t u t e

SRAC

S p e c t r u m c a l c u l a t e d by f - t a b l e l o o k up method i n f a s t r e g i o n ( > 1 3 0 e V ) and u l t r a f i n e g r o u p x e t h o b i n r e s o n a n c e r a n g e ( .6625 - 130 eV)

C a l c u l a t i o n s b a s e d on B 1 - a p p r o x i m a t i o n s a s s u m i n g z e r o b u c k l i n g .

L i b r a r y f rom JENDL-2

70 g r o u p s f a s t ( . 6825 eV - 1 0 . 0 NeV

37 g r o u p s t h e r m a l ( < . 6 8 2 5 eV)

Therma l s c a t t e r i n g Law b a s e d on E K D

)

F / S - I 1 1 d a t a

F i s s i o n e n e r g i e s a s recommended i n benchmark s p e c i f i c a t i o n .

5 . C E A 7

H T e l l i e r C e n t r e d ' E t u d e s N u c i e a i r e s de S a c l a y , F r a n c e

A P O L L O 99 g r o u p c o d e

L a t e s t recommended l i b r a r y .

F i s s i o n e n e r g i e s a s recommended i n b e n c h n a r k s p e c i f i c a t i o n

X e l s 5 a n d R h ' 0 5 s a t d r a t e d a t 3 YLD/Te c s l c u l a t i o n .

37 f i s s i o n p r o d u c t s and 1 p s e u d o p r o d u c t ( t w o i n t h e c a s e o f P u f a e l )

5 . HITACEI A Z u k e r a n H i t a c h i L t d , J a p a n

M o n t e C a r l o c o d e V M 3 N T

L i b r a r y - 1 9 3 e n e r g y g r o u p s f rom JZIGDL-2

1 3 i s o t o p e s s :pple?ented by ENDF/B-I11 and IV (ZNDF/B-111 - R U ' O O , R h l o 5 , P r " 3 , F ' T . ' ' ~ m , P a , P ~ l i ' * ~ , E u ' ~ ~ . EEiD/3-;V - 0 1 6 , C r , F e , * N i , Z r , N I L ) .

T h e r m a l s c a t t e r i n g S ( G , B ENDF/S-111.

M I N X f o r f a s t n e u t r o n s

FLANGE I V f o r t h e r m a l n e u t r o n s

a d o p t e d f r o m

t o p r o d u c e l i b r a r y

47 f i s s i o n p r o d u c t s a r e a l l r e s o n a n t i s o t o p e s

E n e r g y p e r f i s s i o n - U 2 3 5 = 2 0 1 .7 ( a s recommended)

- ? , u Z 3 9 = 2 0 9 . 5 ( 2 1 0 . 0 recommended)

7. ENEA - P Azzoni/D Cepraga ENEA, Bologna, Italy

AMPX-ORIGEN procedure

The aethod used in the calculations is a combination of va-ious SCALE-3 modules and AMPX codes to perform the burnup fuel analysis.

(A) Neutronic Depletion Analysis to Produce ORIGEN Working Libraries

BONAMI-S and NITAWL-s codes are used to perform resonance self-shielding treatments for nuclides that have the appropriate data on the specified Master neutron cross-section library.

XSDRNPM-S performs flux calculations to produce a region-weighted working library.

COUPLE updates the ORIGEN-S working binary library with data on the XSDRKPN-S ueighted working library.

ORIGEN-S execution is invoked to compute the ti~e-dependent densities of the nuclides.

This method is applied repeatedly to produce burnup dependent working libraries.

(3) Burnup and K-INFINITY Calculations

ORIGEN-S performs the nuclide generation and depletion calculation of both the irradiated reactor fdel and the decay of spent fuel.

The iSASl sequence of SCALE-3 modular code system (NITA~L-BONAMI-XSDRKPP!) calculates the K-infinity.

DATA LIBRARIES

(A) 218 Group ENDF/B4 Naster Library

The 218-group Library was developed for the Nuclear Regulatory Commission utilizing all of the general-purpose files in the ENDF/B-IV compilation.

It has 72 thermal groups and is suitable for criticality safety analysis of thermal systems.

(B) 27-Group AMPX Master Library

A 27-group format with 13 thermal groups was selected as an adequate broad group structure to collapse the 278-group library.

The two l i b r a r i e s h a v e a P3 s c a t t e r i n g e x p a n s i o n o r d e r and t r e a t t h e r m a l u p s c a t t e r t o 3 e v .

8. AECL M N i l g r a m

L A T R E P

Atomic E n e r g y o f Canada L t d , C h a l k R i v e r

A c o l l i s i o n p r o b a b i l i t y b u r n u p and t r a n s p o r t c o d e

FISSPROD-3 a f i s s i o n p r o d u c t d e p l e t i o n c o d e w i t h 812 n u c l i d e s .

L i b r a r y b a s e d on ENDF/B-V

E n e r g y / f i s s i o n v a l u e s a s s p e c i f i e d i n benchmark .

9 . MOL G M i n s a r t CEN/SCK, MOL, Relg ium

40 g r o u p r y by XICROS f r o l : KfK K E D A K l i b r a r y and fro^ A8BN.

S c a t t e r i n g m a t r i c e s a n d g r o u p a v e r a g e d c r o s s - s e c t i o n s i n t h e r f i a l r a n g e w i t h SATAN and MICROFLUX c o d e s .

E n e r g y p e r f i s s i o n U n 5 = 201 .il i j Z 3 6 = 2 0 3 . 5 5 pu239= 210 .1 P u 2 1 0 = 2 0 9 . 8 Pu2" = 2 1 2 . 2 p U z * z = 2 1 2 . 9

1 0 . - MOL2 G M i r l s a r t CEN/SCK, K O L , B e l g i u x

CASMO-3

25 g r o u p c r o s s - s e c t i o n l i b r a r y .

3 . RESULTS

The r e s u l t s h a v e been p r e s e n t e d i n two ways . T n e r e a r e 4a t a b l e s and 34 g r a p h s a l l w i t h s e l f e x p l a n a t o r y t i t l e s .

The G r a p h s show t h e r e s u l t s f rom t h e t e n s u b f i i s s i o n s , where a v a i l a b l e , w i t h e a c h s u b m i s s i o n r e p r e s e n t e d by t h e same s y n b o l on e v e r y g r a p h . The key t o t h e g r a p h s i s on page 5 7 .

The c o n t e n t s l i s t o f t h e t a b l e s and g r a p h s f o l l o w s .

AEEW-R 2591

COMMENTS O N THE RESULTS

The r e s u l t s i n t h i s p a p e r a r e g e n e r a l l y i d e n t i c a l t o t h o s e o f t h e p r o v i s i o n a l s e t g i v e n i n N E A C R P - A 921. The p r i n c i p a l e x c e p t i o n i s t h e r e p l a c e m e n t o f t h e EKEA s e t by new r e s u l t s t h a t h a v e b e e n computed w i t h a c o r r e c t e d O R I G E N l i a r a r y . I n a d d i t i o n t h e AECL k - i n f i n i t y r e s u l t s f o r t h e 20/1 c a s e s h a v e b e e n removed a t A E C L t s r e q u e s t . They were n o t i n f a c t LATREP r e s u l t s , t h e LATREP code n o t b e i n g c o n s i d e r e d ( b y A E C L ) t o b e a p p r o p r i a t e f o r h a r d s p e c t r a .

I n i t s aims t h e benchmark was o n l y p a r t i a l l y s u c c e s s f u l f o r v a r i o u s r e a s o n s :

- t h e c o d e s u s e d by s u b ~ i s s o r s w e r e n o t a l w a y s c a p a b l e o f d e p l e t i n g a ' s i m p l e ' homogeneous p r o b l e m

- C i f f e r e n c e s i n a c t i n i d e d a t a a n d / o r h y d r o g e n s c a t t e r i n g l aw d a t a were n o t a l w a v s n e g l i g i b l e c o m ~ a r e d t o t h e - -

e d i f f e r e n c e s i n f i s s i o n p r o & u c t d a t a

The s p r e a d i n i n i t i a l k - i n f i n i t y v a l u e s w i t h a u t d e p l e t i o n and h e n c e w i t h o u t f i s s i o n 3 r o d u c t s i n d i c a t e s t h e i m p o r t a n c e o f t h e a c t i n i d e and h y d r o g e n d a t a d i f f e r e n c e s :

H/U235 = 200/1 k - i n f i n i t y r a n g e 1 . 8 2 0 9 - 1 . 8 5 5 9 H/U2j5 = 20/1 k - i n f i n i t y r a n g e 1 . 7 8 1 5 - 1 . 8 5 3 8 H/Pu239= 200/1 k - i n f i n i t y r a n g e 1 .8033-1 .8599 Fi/Pu239= 20/1 ' / - i n f i n i t y r a n g e 1 . 8 8 2 3 - 1 . 9 k 6 5

T h e s e r a n g e s e x c l u d e t h e C E A d a t a w h i c h i n c l u d e t h e e f f e c t s o f s a t u r a t e d Xe135 and Rh103 a t z e r o i r r a d i a t i o n and a r e t h e r e f o r e n o t c o n p a r a b l e .

A f t e r 10 d a y s t h e r e arc? some v e r y l a r g e d i s c r e p a n c i e s i n t h e f r a c t i o n a l f i s s i o n p r o d u c t a b s o r p t i o n r a t e s . Most o f t h e s e a r e p r o b a b l y d u e t o t h e s p i c i f i c i n c l u s i o n o r e ~ c l u s i o n o f p r e c u r s o r s i n t h e f i s s i o n p r o d u c t scherne b e i n g s o l v e d . F o r e x a m p l e , t h e J A E R I and C E A Ed143 a b s o r p t i o n s a t 10 d a y s a r e 3 . 2 6 8 e - 5 and 1 . 5 0 0 e - 4 r e s p e c t i v e l y ; a t 1000 d a y s t h e y a r e i n good a g r e e n e n t ( 2 . 7 5 9 e - 2 and 2 . 8 3 l e - 2 ) . The d i f f e r e n c e a t 10 d a y s i s t h e r e f o r e c e r t a i n l y d u e t o t h e e x p l i c i t t r e a t m e n t o f a mass 1 4 3 p r e c u r s o r (Pm143, h a l f l i f e 1 3 . 6 d a y s ) i n t h e J A E R I s cheme . T h i s p o s e s a d d i t i o n a l d i f f i c u l t i e s i n c o m p a r i n g t h e r e s u l t s .

The s i m p l e s t c o m p a r i s o n t h a t c a n b e made i s shown i n t h e l a s t f o u r f i g u r e s where t n e t o t a l f i s s i o n p r o d u c t a b s o r p t i o n r a t e ( l e s s Xe135) i s p l o t t e d a g a i n s t i r r a d i a t i o n . F o r t h e H/U=200/1 c a s e t h e r e i s a g r o u p o f r e s u l t s i n c l o s e a g r e e m e n t . The AEEW r e s i l l t i s l o w e r t h a n t h e s e a s a c o n s e q u e n c e o f t h e r e c e n t g l o b a l r e d u c t i o n i n f i s s i o n p r o d u c t c r o s s s e c t i o n s o f 1 5 % . W i t h o u t t h i s r e d u c t i o n t h e AZEW r e s u l t would l i e w i t h most o f t h e r e s t e x c e p t t h a t t h e s l o p e f rom 1000 t o 2000 d a y s i s d i f f e r e n t . T h i s d i f f e r e n c e shows t h e i m p o r t a n c e of t h e d e c a y of Eu155 ( h a l f l i f e 4 . 7 y ) t o Gd155 o v e r a l o n g c o o l i n g p e r i o d .

The ENEA r e s u l t s a r e r a t h e r h i g h comparee t o t h e g e n e r a l c o n c e n s v s al tho,d.gh t h e c o r r e s p o n d i n g k v a l u e s a r e i n r e a s o n a b l e a g r e e m e n t ; t h e H i t a c h i r e s u l t s a r e s i g n i 5 c a n t l y low ( c l o s e t 3 t h e AEZh' r e s u l t s ) and d o y i e l d a c o r r e s p o n d i n i ; l y hi&?; k v v l - 1 3 .

I n t h e H/C=20/1 c z s e w i t h a much h a r d e r s p e c t r u r t h e ? ? i s a g e n e r a l s p r e a d o f r e s u l t s f r o n 22% t o 31% i n d i c a t t n g a b i g g e r s p r e a d i n f i s s i o n p r o d u c t r e s o n a n c e i n t e g r a l s t h a n i n t h e r n a l c r o s s s e c t i o n s . I n t h e H / P u c a s e s t h e r e i s t 3 e a d d e d c o m p l i c a t i o n o f n i g h e r a c t i n i d e d a t a and p r o b a b l y t h e g r e a t e r u n c e r t a i n t y i n f i s s i o n p r o d u c t y i e l d s f rom p l u t o n i u a f i s s i o n . The r e s u l t i s a g e n e r a l s p r e a d f rom 9% t o 1 3 % i n t h e H/Pu=200/1 c a s e and f rom 1 9 % t o 23% i n t h e H/Pu=20 /1 c a s e .

I n c o n c l u s i o n , t h e f i s s i o n p r o d u c t benchmark was n o t i d e a l l y s u i t e d t o d i s c o v e r i n g t h e r a n g e and a d e q u a c y o f t h e f i s s i o n p r o d u c t c r o s s s e c t i o n d a t a and f i s s i o n y i e l d s i n u s e a t t h e p r e s e n t t i m e . A s i m p l e s t a t e m e n t o f one g r o u p c r o s s s e c t i o n s a v e r a g e d o v e r a p r o p r i a t e s p e c t r a t o g e t h e r w i t 3 t 2 b l e s o f f i s s i o n y i e l d s f rom t h e p r i n c i p a l a c t i n i d e s would ? r o b & S l y h z v e beer. a n e 2 s i e r an?, l e s s t i m e - c o n s u m i n g way t o h a v e e l i c i t e d u m o r e p r e c i s e i n f o r n a t i o n .

TABLES AND GRAPHS

Page

TABLES

K m H/UZ3' = 200/1 K m H/U2" = 20/1 K, H/Pu2 " = 200/1 K m H/Pu2" = 20/1 UZ3' fission H/U235 = 200/1 U Z S 6 fission H/UZ3' = 200/1 U2" fission H/UZ3' = 20/1 U Z s 6 fission H/UZS5 = 20/1 P u ~ ~ ~ fission H / P U ~ ' ~ = 200/1 Pu2*" fission H/PuZ3•÷ = 200/1 Pu2*' fission H / P U ' ~ ~ = 200/1 PuZU2 fission H/Pu2" = 200/1 pu23= pu2.0

fission H/Pu2" = 2001 fission H/Pu2" = 2011

Pu2" fission H / P u ~ ~ ~ = 20/1 PuZu2 fission H / P u ~ ~ ~ = 20/1

The following tables contain fractional absorptions for H, UZ3', U 2 3 6 , Xei3', Rh103, Xe13', Ndlb3, Ndi'5, Pn1*', SmlU9, Srnl5l, SmlS2, Gd15' and total fission product -Xe13'

H/UZ3' = 200/1 at 10 days H/U2" = 203/1 at 1000 days H/U2 3 5 = 200/1 at 2000 days H/UZ3' = 23/1 at 10 days H/UZ3' = 20/1 at 100 days H/UU5 = 20/1 at 2000 days

* The following tables contain fractional absorptions for H, P u ~ ~ ~ , PuZr0, Pu241, ~ ~ 2 4 2 , ~ ~ 1 3 5 , ~ h l O 3 , ~ ~ 1 3 1 , ~ ~ 1 3 3 , ~ d l * 3

N C ? " ~ , Pmlr7, Smlq9, SmlS1, SmlS2, GdlS7, and total fission product - Xe13'

H/Pu2 " = 200/1 at 10 days H/Pu"~ = 200/1 at 1000 days H/PuZ3' = 200/1 at 2000 days H/PuZ3' = 20/1 at 10 days H/PuZ3* = 20/1 at 1000 days H / P U ~ ' ~ = 20/1 at 2000 days

The following tables contain relative nu.~ber densities of E , U Z 3 s " 2 3 6 ~ ~ 1 3 5 , RhIO3, Xe131', Cs133, N d l G 3 , Nd"5, Pml", S m 1 4 9 , SmIs1, Sm15', GdIs7

H/U235 = 200/1 at 10 days H/U235 = 200/1 at 1000 days H/UZ35 = 200/1 at 2000 days H/U235 = 20/1 at 10 days H/UZ3' = 20/1 at 1000 days H/U235 = 20/1 at 2003 days

The following tables contain relative number densities of H, puz39, p ~ ~ ~ ~ , pu2+', P U ~ * ~ , X e 1 3 5 , Rh103, Xe'", Cs"" Ndl", Pm'", Sm149, Smi5', S m 1 5 2 , GdlS7

H / P U ~ ' ~ = 200/1 at 10 days H / P u ~ ~ ' = 203/1 at 1030 days H / P u ~ ~ * = 230/1 at 2030 days H/Pu2" = 20/1 at 10 days H / P u ' ~ ~ = 20/1 at 1000 days H/Pa2" = 20/1 at 2003 days

GRAPHS

All graphs are plotted against time

KEY for all graphs

K m H/UZ3' = 200/1 K m H/U235 = 20/1 K, H/Pu2" = 200/1 K m H/?UZa9 = 20/1 112 3 5 fission H / U Z 3 ' = 230/1 ~ 2 3 6 fission H/U2" = 200/1 U 2 3 5 fission H/U235 = 20/1 u 2 3 6 fission H/U235 = 20/1 P u ~ ~ ~ fission H/i'u2" = 200/1 Pu2*0 fission H/PuZ3' = 200/1 Pu2" fission H / P u ~ ~ ~ = 200/1 PuZk2 fission H/PuZ3' = 200/1 P u ~ ~ ~ fission H / P u ' ~ ~ = 20/1 PuzU0 fission H/PuZ3" = 20/1 Pu2" fission H / P U ' ~ ~ = 20/1 P u ~ ' ~ fission H/PuZ3' = 20/1

Fractional absorptions for H/U2" = 200/1

Total fission product - X e 1 3 s H / U Z s 5 = 200/1 Total fission product - X e H 5 H/UZ3' = 20/1 Total fission product - X e 1 3 5 H/PuZ3* = 200/1 Total fission product - XeIa5 H/PuZ3* = 20/1

(xi)

K -" H/U2" = 200/1

D A Y S 0 10 500 1000 2000

AEEW

A N L

A A E C

JAEEI

ENEA

A E C L

MOL

NOL2

DAYS

AEEV 1.8509 1.8019 1.5685 1.2441 1 .2907

AI4L 1.8538 1 .8029 1.5606 1.2186 -

A A E C 1.8404 1.7906 1.5318 1 .I841 1 .I964

JAERI 1.8137 1.7652 1.5293 1.2227 1.2598

CEA 1.8038* 1.7920 1.531 1 1.2105 1.2756

H I T A C H I 1 .8185 1.7712 1.5542 1.2831 1.3170

ENEA - - - - -

AECL - - - -

MOL 1.7815 1.7332 1.5291 1.2839 -

MOL2 1.8519 1.8008 1.5329 1 .I648 -

* I n c l u d e s t h e e f f e c t s of s a t u r a t e d X e l a 5 and R h l O S

AEEW-R 2591

1

DAYS 0 10 500 1000 2000

ANL 1.8427 1.7869 1 .4880 1 .I762 -

A A E C 1.8261 1 .7679 1.4596 1 .I754 1.1551

J A E R I 1.8469 1.7885 1 .485'7 1 .I894 1 .I843

C E A 1 .7965* 1 .7786 1 .4736 1 .I800 1 .I838

HITACHI 1.8349 1.7793 1 .4920 1 .2458 1.2523

EIJEA 1.8289 1.7746 1.4778 1 .I955 1 .I784

A E C L 1.8033 1.751 4 1 .4563 1 .I790 1 .I684

MOL 1.8699 1 .8121 1.5396 1.2189 -

NOL2 1 .8238 1.7666 1.4635 1 .I743 -

AEEW 1.8823 1.8187 1 .3867 1 .l226 1 .I090

A N L 1 .9'466 1 .8822 1 .4107 1 .I401 -

A A E C 1.8913 1 .8239 1.3607 1 .I037 1.0777

Q

J A E R I 1.9029 1 .8360 1.3764 1 .lo34 1 .0948

C E A 1 .8903* 1.8425 1.3698 1 .I072 1.0984

HITACHI 1 .9051 1.8429 1 .4095 1 .I712 1 .I535

ENEA - - - - -

A E C L - - - - -

MOL 1.9276 1 .8651 1.3989 1.161'4 -

XOL2 1 .8872 1.8184 1.3634 1 .0950 -

* I n c l u d e s t h e e f f e c t s o f s a t u r a t e d X e L 3 ' a n d R h ' 0 5 .

AEEW-R 2591 2 i; ; ' > . , . . : ( \ -1 I -

d i , ;.,~ ;! , ,,.)

U 2 3 5 D A Y S 0 10 500 1000 2000

AEEW 7.631-,

A N L 7.606-,

A A E C 7.595-1

J A E R I 7.574-,

r) C E A 7-377-1

H I T A C H I 7.564-,

E N E A 7.62-,

* A E C L 7.580-,

MO L 7.511-,

MOL2 7.592- ,

U 2 3 6 - D A Y S 0

AEEW 0 2.441-,

A N L 0 2.3'17-,

A A E C 0 2.406-,

J A E R I 0 3.724-,

C E A 0 0

H I T A C H I 0 3.726-,

E N E A 0 2.15-6

* A E C L 0 7.451-6

MOL 0 2.555-6

MOL2 0 2.759-6

* Includes the (n,2n) reactions A E E U - R 2591

3

FISSIONS

H / U Z 3 5 = 20 /1

"2 3 5 - D A Y S 0 10 500 1000 2000

A E E W 7 . 5 6 8 - ,

A N L 7 . 6 1 9 - I

A A E C 7 . 5 6 3 - ,

J A E R I 7 . 4 2 7 - ,

C E A 7 . 4 0 9 - ,

H I T A C H I 7 . 4 4 4 - ,

E N E A -

AECL -

MOL 7 . 3 2 1 - ,

MOL2 7 . 6 1 2 - ,

" 2 3 6 - D A Y S 0

A E E W

A N L

A A E C

J A E R I

C E A

H I T A C H I

E N E A

A E C L

MOL

MOL2

FISSIONS

H/Pu~'' = 200/1

P u Z s 9 DAYS 0 10 500 1000 2000 -

AEEW 6 .323- , 6 .133- , '1.758-, 2 . 889 - , 3.003-1

ANL

A A E C

J A E R I

C E A

H I T A C H I

EllEA

*AECL

MOL

MOL2

- p u 2 + o - DAYS

AEEW 0 1 .558-, 5 .119- ,

J A E R I 0 1 .726- , 5 .829- ,

C E A 0 1 . O O O - , 5 .003- ,

H I T A C H I 0 1 .721-5 5 .763- ,

ENEA 0 1 .74- , 5 .84- ,

*AECL 0 1 .604- , 5 .284-+

MOL 0 1 .504- , 5 .047- ,

MOL2 0 1 .866- , 6 .091- ,

* I n c l u d e s t h e (n,2n) r e a c t i o n s

FISSIONS

H/Pu''~ = 200/1

Pu2*' D A Y S 0 10 500 1000 2000 -

AEEW

A N L

A A E C

J A E R I

C E A

H I T A C H I

E N E A

" A E C L

MOL

MOL2

P u 2 u Z - D A Y S

AEEW 0 1 .026-,, 9.260-,

A N L 0 9.590-,, 9.038-,

A A E C - - -

J A E R I 0 1 .055-,, 9.694-,

C E A - - -

H I T A C H I - I l 1 8.618-,

E N E A 0 1.09-10 1.20-,

* A E C L 0 2.475-10 2.110-,

MOL 0 1.569-10 9.102-,

M O L 2 0 1 . ~ 6 7 - , ~ 1.072-5

* I n c l u d e s the (n,2n) r e a c t i o n s

AEEW-R 2591

6

FISSIONS

H / P u ~ ' ~ = 20/1

P u ~ ~ ~ DAYS - 0 10 500 1000 2000

AEEW

ANL

AAEC

J A E R I

ENEA

AECL

MOL

MOL2

P u 2 * 0 DAYS 0 10 500 1000 2000

AEEW

ANL

AAEC

J A E R I

CEA

H I T A C H I

ENEA

AECL

MOL

MOL2

FISSIONS

Pu2*' DAYS 0 10 500 1000 2000

AEEW 0 1.459-, 5.270-, 1.290-, 1 .172-,

ANL 0 1 .246-, 5.158-2 1.272-, -

AAEC 0 1.611-, 5.548-, 1.321-, 1.190-1

JAERI 0 1 .502-+ 5.557-2 1 .279-, 1 .168-,

C EA - - - - -

HITACHI 0 1.661-, 5.430-, 1 .204-, 1 .091-,

ENE A - - - - -

AECL - - - - -

MOL 0 1.589-, 5.337-2 1.255-, -

MOL2 0 1.527-, 5.421-, 1.288-, -

P u 2 Q 2 - DAYS 0 10 503 1003 2000

AEEW

ANL

AAEC

JAERI

CEA

HITACHI

ENEA

AECL

MOL

MOL2

FRACTIONAL ABSORPTIONS AT 10 DAYS . H / U Z s 5 = 200/1

ISOTOPE H " 2 3 5 " 2 3 6 Xe13' R h l 0 "

AEEW 8 .660- , 8 . 794 - , 9.713-5 3.016-, 5 .398- ,

A N L 8 .610- , 8 . 793 -> 1 .077- , 3.048-, 6.753-,

AAEC 8.687-, 8 785- 1 .098- , 3.018-, 7 .000- ,

J A E R I 8 . 655 -2 8 .803- , 1.126- , 2.882-, 7.1 14- ,

CEA 8 .542- , 8 .786- , 1 . l o o - , 3 .035-2 8 .000- ,

H I T A C H I 8 .705- , 8 .789-1 1 . 0 6 4 - + 2.970-, 6 .948- , * ENEA 8 . 6 8 - , 8 . 7 9 - I 9 .20- , 3 .01- , 6 .76- ,

A E C L 8 .695- , 8 . 783 - I 1 .182-+ 3 .025-2 6 .908- ,

MOL 8 .662- , 8 . 778 - , 1 .131- , 2 .977-2 -

MOL2 8 .775- , 8.77'1-, 1 .126- , 3.021-, 8 . 2 f 1 5 - ~

ISOTOPE Xe13' C S " ~ Ndl* ' P , l l ' ' Nd 1 * 3

AEEW 4.605-, 4 .327- , 1 .264- , 2 .401- , 1 .086- ,

ANL 1 .702- 1 . 673-, 2.184-, 2 .527- , 2.269-,

9 AAEC 6 .170- , 2 .310- , 3 .370- , 2.570-, 2.643-,

J A E R I 2 .005- , 2 .461- , 3.268-, 2.353-, 2.375-,

C E A 5 .000- , 5 .000- , 1 .500- , 2 .000- , 1 . O O O - ,

H I T A C H I 1 ,721 - 1.933- , 2.358-, 2.328-, 2 .546- ,

ENEA 1 .57- , 1 . 69 - , 2 .30- , 2 .30- , 2 .42- ,

AECL 2.054-, 2.333-5 3.363- 5 2.587-5 2.662-,

MOL - - - - -

FRACTIONAL ABSORPTIONS AT 10 DAYS H/UZ3' = 200/1

ISOTOPE SIE'*~ Sm15' Sn152 Gd15' Remainder Total F.P -Xe135

AEEW

ANL

A AEC

JAERI

CEA

HITACHI

ENEA

AECL

K O L

NOL2

FRACTIONAL ABSORPTIONS AT 1000 DAYS

ISOTOPE H U 2 3 s " 2 3 6 X e 1 3 5 Rh1•‹

AEEW

ANL

AAEC

JAERI

CEA

HITACHI

# ENEA

AECL

MOL

ISOTOPE Xelsl C s 1 3 3 Ndl*, 1 q d i q 5 Prnl*'

AEEW

ANL

A AEC

JAERI

CEA

HITACHI

ENEA

AECL

MOL

MOL2

FRACTIONAL ABSORPTIONS AT 1000 DAYS H / U 2 3 5 = 200/1

ISOTOPE Srnl'* Sm15' Sin1 Gd15' Rezainaer T o t a l F.P -Xel j j

AEEW

ANL

AAEC

JAERI

CEA

HITACHI

ENE A

AECL

MOL

MOL2

FRACTIONAL ABSORPTIONS AT 2000 DAYS H / U Z s 5 = 2 0 0 / 1

I S O T O P E H " 2 3 5 " 2 3 6 X e l s 5 R h 1 0 3

AEEW

ANL

AAEC

J A E R I

CEA

H I T A C H I

ENEA

AECL

M3L

MOL2

I S O T O P E

AEE'v;

ANL

AAEC

J A E R I

CEA

H I T A C H I

ENEA

AECL

MOL

MOL2

FRACTIONAL ABSORPTIONS AT 2000 DAYS H / U Z s 5 = 200/1

ISOTOPE SmlU9 SIT.'^^ SmlS2 ~d I 5 7 Remainder T o t a l F . P -Xel35

AEEW

ANL

A AEC

JAERI

CEA

HITACHI

ENE A

AECL

NOL

NOL?


ISOTOPE H ~ 2 3 5 X e 1 3 5 R h 1 0 3 U 2 3 6

AEEW

ANL

AAEC

JAERI

CEA

HITACHI ,* ENEA

AECL

MOL

MOL2

ISOTOPE

AEEW

ANL

A AEC

JAERI

CEA

HITACHI

ENEA

AECL

MOL

MOL2

FRACTIONAL ABSORPTIONS AT 10 DAYS - H/UZ3' = 20/1

ISOTOPE S I ~ ; ' ~ ~ SmlS1 S m 1 5 2 G d I s 7 Re3ainder Total F.P -Xel35

AEEN

ANL

AAEC

JAERI

CEA

HITACHI

ENEA

AECL

MOL

MOL2

AEEW-R 2591

FRACTIONAL ABSORPTIONS AT 1000 DAYS H/UZ3' = 20 /1

I S O T O P E H U 2 3 5 u 2 3 6 X e 1 3 5 R h l o 3

AEEW

A N L

A A E C

J A E R I

C E A

H I T A C H I

E N E A

A E C L

MOL

M O L 2

I S O T O P E Xe13' C s 1 3 3 N d l q 3 N 6 1 ' 5 P m r r 7

AEEiJ

A N L

A A E C

J A E R I

C E A

H I T A C H I

E N E A

A E C L

MOL

M O L 2

AEEW-R 2 5 9 1


ISOTOPE Srn"s Srn15' S n 1 5 2 GdI5' Remainder Total F. P -Xe 135

AEEW

ANL

AAEC

JAERI

CE A

H I T P . C H 1

ENEA

AECL

MOL

?:CL2

F R A C T I O N A L A B S O R P T I O N S A T 2000 DAYS H/UZS5 = 2 0 / 1

I S O T O P E H U 2 3 5 u 2 3 6 X e l J s R h ' 0 3

AEEW

ANL

AAEC

J A E R I

CEA

H I T A C H I

ENEA

AECL

M3L

MOL2

I S O T O P E

AEEX

ANL

AAEC

J A E R I

C E A

H I T A C H I

ENEA

AECL

MOL

MOL2

AEEK-R 2 5 9 1


ISOTOPE Srnli3 SalS1 S I ? ~ ' ~ ~ GdlS7 Re~ainder Total F.P -Xe 135

AEEW

ANL

A AEC

JAERI

CEA

HITACHI

ENEA

AECL

MOL

KOL2

F R A C T I O N A L A B S O R P T I O N S A T 1 0 D A Y S H / P u " ~ = 2 0 0 / 1

I S O T O P E H P u 2 3 9 P u 2 * 0 P u Z L 1 P U ~ * ~ X e l s 5

AEEW

A N L

A A E C

J A E R I

C E A

H I T A C H I

C E N E A

A E C L

MOL

M O L 2

I S O T O P E R h 1 0 3 X e l a l C s l 3 3 t J d l q 3 N d 1 4 5 PxD7

AEEW

A N L

A A E C

J A E R I

C E A

H I T A C H I

E N E A

A E C L

FRACTIONAL ABSORPTIONS A T 10 DAYS H/Pu2 3 9 = 200/1

ISaTOPE Srn"9 Sml S n 1 5 2 Gd157 Remainde r T o t a l F . P -Xe 135

AEEW

ANL

A A E C

J A E R I

CE A

HITACHI

ENEA

A E C L

MOL

MOL2

FRACTIONAL ABSORPTIONS AT 1000 DAYS H / P U ' ~ ~ = 200 /1

ISOTOPE H Pu2 3 9 PuZ4O P u Z L 1 P U , * ~ X e l s s

AEEW 1 . 1 6 , 4 . 2 6 2 - I 1 . 7 0 8 - , 1 . 6 6 0 - , 5 .307-3 2 .387-2

ANL 1 . 1 7 0 - , 4 . 2 1 0 1 . 6 7 8 - , 1 . 5 6 3 - , 5 . 0 2 0 - , 2 .573- ,

A A E C

JAERI

CEA

HITACHI

a ENEA

A E C L

MOL

ISOTOPE RhlO" X e 1 3 1 C s 1 3 , N d 1 * 3 ldd145 P n l * '

A A E C

J A E R I

CE A

HITACHI

E N E A

AECL

MOL

FRACTIONAL ABSORPTIONS AT 1 0 0 0 DAYS H / P u ~ ~ ~ = 2 0 0 / 1

ISOTOPE S Z I ' ' ~ Sm' 5 1 Srnls2 G d l S 7 R e ~ a i n d e r T o t a l F . P -Xe135

AEEW 7 . 8 4 7 - , 5 . 6 4 7 - , 5 . 1 8 7 - 3 2 . 5 6 5 - , 3 .531 -2 9 . 3 2 2 - >

A N L 8 . 0 9 3 - n 5 . 8 0 7 - 3 5 . 7 6 8 - , 4 . 6 6 9 - , 4 . 0 8 3 - 2 1 . 0 7 2 - )

A A E C 7 . 5 7 7 - 3 5 . 5 7 8 - 3 5 . 7 7 4 - 3 3 . 8 5 6 - + 4 . 1 2 1 - , 1 . 0 6 5 - ]

J A E R I 7 . 9 8 1 - , 5 . 8 3 2 - , 5 . 4 3 1 - , 6 . 1 3 7 - , 4 . 3 6 5 - 2 1 . 0 8 3 - 1

C E A 7 . 7 4 0 - 3 5 . 6 8 0 - 3 - - 2 . 1 1 7 - 1 2 . 7 1 4 - ,

H I T A C H I 7 . 4 9 3 - , 5 . 2 7 7 - a 4 . 3 8 7 - , 7 . 0 3 9 - , 3 . 2 4 6 - 2 8 . 8 7 9 - 2

ENEA 7 . 7 5 - 3 5 . 2 3 - , 6 . 3 8 - , 3 . 5 1 - , 4 . 4 3 3 - ,

A E C L 7 . 4 3 5 - > 5 . 5 5 6 - , 5 . 4 5 6 - , 4 . 7 4 3 - , 3 . 8 2 ~ ~ 1 . 0 1 6 - ,

MOL 5 . 7 7 9 - , - - - 8 . 7 6 3 - , 9 . 3 4 1 - ,

MOL2 7 . 7 8 8 - 3 5 . 4 9 8 - , 5 . 8 3 9 - , - 4 . 1 1 3 _ , 1 . 0 2 5 - ,

FRACTIONAL ABSORPTIOR? AT 2000 DAYS H / P U ' ~ ~ = 200 /1

ISOTOPE H P u 2 = Pu2 '0 P u z * P u Z h 2 X e l 3 5

AEEW 1 . Z O O - I

ANL -

AAEC 1 . 1 7 1 - ,

JAERI 1 . 2 1 2 - ,

C E A -

HITACHI 1 .055- , ENE A 1 . 0 6 - ,

A E C L 1 . 1 8 6 - ,

MO L -

MOL2 -

ISOTOPE R h l 0 "

AEEW 1 .164- , 5 . 7 5 9 - , 4 . 6 5 9 - , 1 . 1 3 2 - , 2 .201- , 2 . 6 2 9 - ,

A N L - - - - - -

A A E C 1 . 6 2 5 - , 7 . 1 6 7 - , 5 . 4 1 5 - , 1 . 2 3 6 - , 2 . 1 7 4 - , 2 . 5 2 5 - ,

J A E R I 1 . 5 7 6 - , 6 . 4 5 1 - , 5 . 7 0 0 - , 1 . 2 5 2 - , 2 . 1 2 6 - , 2 . 4 0 4 - ,

CEA 1 . 589-2 7 . 1 3 0 - , 5 . 3 7 0 - , 1 . 2 5 4 - , 2 . 0 2 0 - , 2 . 4 3 0 - ,

HITACHI 1 . 370- , 5 . 0 4 0 - , 4 . 6 9 6 - , 1 . 1 8 1 - , 1 . 672- , 2 . 0 7 1 - ,

ENEA 1 .78- , 7 . 4 4 - , 6 . 1 4 - , 1 .13 - , 2 . 3 l - , 2 . 9 0 - ,

AECL 1 .593-2 6 . 8 1 2 - , 5 . 0 8 9 - , l . ~ , 2 . 0 6 2 - , 2 . 3 4 1 - ,

MO L - - - - - -

MCL2 - - - - - -

AEEW-R 2591

FRACTIONAL ABSORPTIONS AT 2000 DAYS H/?uZa9 = 200/1

ISOTOPE S.71lU9 S n i 5 1 S m 1 5 2 G d l S 7 Remainder Total F . P -Xe135

AEEW

ANL

AAEC

JAERI

CEA

HITAZHI

ENZA

AECL

M3L

NOL2

FRACTIONAL ABSORPTIONS AT 1 0 D A Y S . H / P U ~ ' ~ = 2 0 / 1

ISOTOPE H P u 2 3 3 PuZ*O P u 2 + ' P u Z q 2 Xe13,

AEEW 4 . 7 9 9 - , 9 . 6 0 9 - I 2 . 1 3 5 - 2 1 . 9 1 6 - , 2 . 1 8 4 - , 7 . 5 2 2 - ,

A N L 5 . 0 0 9 - , 9 . 6 1 6 - , 1 . 9 6 3 - 2 1 . 5 4 9 - , 1 . 5 4 9 - , 9 . 1 1 9 - ,

AAEC 4 . 8 8 0 - ,

J A E R I 4 . 8 9 9 - ,

C E A 4 . 6 4 0 - 3

H I T A C H I 4 . 9 5 9 -

1) ENEA -

AECL -

MOL 5 . 3 6 7 - ,

ISOTOPE R h l O X e l 3 ' C s 1 3 3 N d l * ' N d l b 5 P m l U 7

AEEi j

ANL

a AAEC

J A E R I

C E A

H I T A C H I

E N E A

A E C L

MOL

FRACTIONAL ABSORPTIOXS A T 10 DAYS , H / P u ~ ~ ~ = 20/1

ISOTOPE Srn' " Srn15 ' S rn lS2 G d I 5 ' Remainde r T o t a l F . P -Xe135

AEEW

A N L

A A E C

J A E H I

CEA

H I T A C H I

E N E A

A E C L

M O L

NOL2

FRACTIONAL ABSORPTIONS AT 1000 DAYS H / P u 2 ' $ = 20 /1

ISOTOPE H P u 2 3 9 PuZ4O Puz" P U ~ * ~ Xel 3 5

AEEW

A N L

A A E C

J A E R I

CEA

H I T A C H I * ENEA

AECL

MOL

MOL2

ISOTOPE R h l 0 ' Xe131 C s 1 3 3 Ndl" N d X Q 5 P m l r 7

AEEW 1 . 656- , 1 . 3 4 7 - 2 1 . 6 0 5 - , 6 . 2 1 4 - , 5 .445- , 7 . 7 7 5 - ,

A N L 2 .683- , 1 .461- , 1 . 662- , 7 . 1 1 1 - , 6 . 2 8 1 ~ ~ 7.9'12-,

A A E C 2.2011-, 1 . 4 7 1 - , 1 . 6 1 2 - , 7 . 7 0 8 - , 5 . 7 3 3 - , 7 .536- ,

J A E R I 2 .115- , 1 . 2 1 5 - 2 1 . 633- , 7 . 7 0 1 - 3 4 .955- , 7 . 0 6 6 - ,

H I T A C H I 2 .051- , 1 . 1 1 7 - , 1 . 4 6 1 - , 8 . 0 9 0 - , 4 .228- , 6 .791- ,

MOL - - - - - -

f4OL2 1 . 8 5 2 - 2 1 .393-2 1 . 6 1 2 - 2 6 . 7 0 9 - 3 6 .646- , 7 .152- ,

AEEW-R 2591

FRACTIONAL ABSORPTIONS AT 1000 DAYS H / P u ' ' ~ = 20 /1

ISOTOPE Srnl 4 9 S n 1 5 ' S m 1 5 2 G d l S 7 R e x a i n d e r T o t a l F.P -Xe135

AEEW

ANL

A A E C

J A E R I

C E A

HITACHI

ENEA

AECL

MOL

MOL2

FRACTIONAL ABSORPTIONS AT 2000 DAYS H / P U " ~ = 2 0 / 1

I S O T O P E H P u 2 3 9 P u Z ' O P u 2 * ' P u Z u 2 Xe13'

AEEW

ANL

A AEC

J A E R I

CEA

H I T A C I i I

ENEA

AECL

M3L

MO L 2

I S O T O P E

AEEW

ANL

AAEC

J A E R I

CEA

H I T A C H I

ENEA

AECL

MOL

M3L2

AEEW-R 2 5 9 1

FRACTIONAL ABSORPTIONS AT 2000 DAYS H / P u ~ ' ~ = 20/1

ISOTOPE Sm l SnI5 S m i S 2 G d L S 7 R e a a i n d e r Total F . P -Xe135

AEEW

ANL

AAEC

JAERI

CEA

HITACFI

ENEA

P.ECL

MOL

M3L2

R E L A T I V E NUMBER D E N S I T I E S A T 1 0 DAYS H / U Z " = 2 0 0 / 1

I S O T O P E H u 2 3 5 ~ 2 3 6 X e 1 3 = R h 1 0 3

AEEW

ANL

AAEC

J A E R I

CEA

H I T A C H I

I, ENEA

AECL

MOL

MOL2

I S O T O P E X e C s l X 3 Ndl'" Ndl*' Pml"

AEEW

ANL

m AAEC

J A E R I

CEA

H I T A C H I

ENEA

A E C L

MO L

R E L A T I V E NUMBER D E N S I T I E S AT 1 0 DAYS H / U 2 " = 2 0 0 / 1

I S O T O P E Srnls9 Srn ls1 S m 1 5 ' G d l S 7

AEEW

ANL

A AEC

J A E R I

CEA

H I T A C H I

ENEA

AECL

MOL

MOL2

R E L A T I V E NUMBER D E N S I T I E S AT 1 0 0 0 DAYS H/UZ3' = 2 0 0 / 1

I S O T O P E H ~ 2 3 5 " 2 3 6 X e 1 3 5 R h l o 3

AEEW

ANL

AAEC

J A E R I

CEA

H I T A C H I

ENEA

AECL

MOL

NOL2

I S O T O P E X e r a l C s 1 3 3 N d 1 4 3

AEEW

ANL

AAEC

J A E R I

CEA

H I T A C H I

ENEA

AECL

MO L

AEEU-R 2 5 9 1

RELATIVE NUMBER DENSITIES AT 1000 DAYS - H / U Z 3 ' = 200 /1

ISOTOPE S m l ' g SIT^'^' S rn l sz G 6 l S 7

AEEW

AIJL

A A E C

J A E R I

C E A

HITACHI

E N E A

A E C L

K O L

MOL2

AEEW-R 2591

R E L A T I V E NUMBER D E N S I T I E S A T 2000 D A Y S H / U Z 3 ' = 200/1

I S O T O P E H ~ 2 3 5 ~ 2 3 6 X e l s s R h l o 3

AEEW

A N L

A A E C

J A E R I

C E A

H I T A C H I

E N E A

A E C L

M 3 L

M O L 2

I S O T O P E

AEEW

A N L

A A E C

J A E R I

C E A

H I T A C H I

E N E A

A E C L

MOL

M 3 L 2

RELATIVE NUMBER DENSITIES AT 2000 DAYS H / U 2 " = 200/1

ISOTOPE S I ~ ' ' ~ Srnl5' S I I I ' ~ ~ G d l S 7

AEEW

ANL

A A E C

JAERI

C C A

HITACHI

E N E A

A E C L

MOL

N3L2

R E L A T I V E NUMBER D E N S I T I E S AT 1 0 DAYS . H / U Z s S = 2 0 / 1

I S O T O P E H u 2 3 5 " 2 3 6 X e l 3 = R h l 0

AEEW

ANL

AAEC

J A E R I

CEA

H I T A C H I

ENEA

AECL

MOL

MOL2

I S O T O P E

AEEW

ANL

AAEC

J A E R I

CEA

H I T A C H I

ENE A

AECL

MOL

MOL2

RELATIVE NUMBER DENSITIES AT 10 DAYS. H/U2" = 20/1

ISOTOPE Srnl's SIII'~' G 6 l S 7

AEEW

ANL

AAEC

JAERI

CEA

HITAC~I

ENEA

AECL

MOL

MOL2

R E L A T I V E NUMBER D E N S I T I E S A T 1 0 0 0 DAYS H / U 2 " = 20 /1

I S O T O P E H " 2 3 5 " 2 3 6 X e l a s R h l o 3

AEEW

ANL

AAEC

J A E R I

CEA

H I T A C H I

ENEA

AECL

MOL

MOL2

I S O T O P E

AEEW

ANL

AAEC

J A E R I

CEA

H I T A C H I

ENEA

AECL

MOL

MOL2

RELATIVE NUMBER DENSITIES AT 1000 DAYS H / U 2 " = 20/1

ISOTOPE S ~ I " ~ S n 1 5 1 Srn lS2 G d L 5 '

AEEW

A N L

A A E C

J A E R I

C E A

liITACH1

E N E A

AECL

MOL

M3L2

A E E W - R 2591

R E L A T I V E NUMBER D E N S I T I E S A T 2000 D A Y S H / U 2 " = 20 /1

I S O T O P E H ~ 2 3 5 u 2 3 6 X e 1 3 5 R h I o 3

AEEW

A N L

A A E C

J A E R I

C E A

H I T A C H I

E N E A

A E C L

M 3 L

I S O T O P E X e I 3 l C s L 3 , 1 4 d i 4 "

AEEW

A N L

A A E C

J A E R I

C E A

H I T A C H I

E N E A

A E C L

M 3 L

RELATIVE NUMBER DENSITIES AT 2000 DAYS H/UZ3' = 20/1

ISOTOPE S r n I h 9 S r c L 5 ' S r n 1 5 2 G d l S 7

AEEW

ANL

AAEC

JAERI

CEA

HITACHI

ENEA

AECL

M3L

M3L2

RELATIVE NUMBER DENSITIES AT 1 0 DAYS H / P u Z 3 ' = 200/1

ISOTOPE H P u 2 3 9 Pu2'0 P u 2 * l P u ~ ~ ~

AEEW 2 . 0 0 0 + 2 9 .907-1 3 . 1 2 9 - 3 2 .989-5 2 . 4 5 6 - a

ANL 2 .000+2 9 .909-1 3 . 0 0 0 - , 2 . 7 5 4 - , 2 .233- ,

AAEC 2 . 0 0 0 + , 9 . 9 0 8 - , 3 . 1 1 2 - , 3 . 4 4 6 - , 2 .681- ,

J A E R I 2 . 0 0 0 + , 9 . 9 1 0 - , 3 . 0 0 8 - , 2 . 9 0 2 - , 2 .493- ,

CEA - - - - -

HITACHI 2 . 0 0 0 + , 9 . 9 1 0 - , 3 . 0 1 8 - , 3 . 2 8 2 - , 2 . 6 8 1 -, a ENEA 2 . 0 0 0 + , 9 . 9 1 - , 3 . 0 8 - , 3 . 1 5 - , 2 . 4 4 - ,

A E C L 2 . 0 0 3 + , 9 . 9 0 5 - 1 3 . 3 0 3 - , 3 .212- , 2.832.. , MOL 2 . 0 0 0 + , 9 . 9 0 8 - , 2 . 9 9 2 - , 2 . 8 3 6 - , 4 . 0 6 0 - ,

MOL2 2 . 0 0 0 + 2 9 . 9 0 7 - , 3 . 1 3 9 - , 3 .015- , 2 . 5 0 6 - ,

ISOTOPE Xe R h 1 0 3 Xe131 C s 1 3 3 N d l q 3 Ndl +'

AEEW

ANL

a AAEC

JAERI

CEA

HITACHI

ENEA

AECL

MOL

AEEW-R 2591

RELATIVE NUMBER DENSITIES AT 10 DAYS - . H/PuZ" = 200/1

ISOTOPE Pml" Sm"' S m i s l S m 1 5 2 c - 6 ' 5 7

AEEW 1.210-,

ANL 3.056-,

A AEC 3.192-,

JAERI 3.093-5

CEA -

HITACHI 3.134-,

ENEA 3.24-

AECL 3.185-,

M3L -

MOi2 1.143-,

RELATIVE NUMBER D E N S I T I E S AT 1 0 0 0 DAYS H / P u Z y 9 = 2 0 0 / 1

I S O T O P E H P u , ~ * P u Z * O P u 2 * P u Z L 2

AEEW

ANL

AAEC

J A E R I

CEA

H I T A C H I

ENEA

AECL

MOL

MOL2

I S O T O P E

AEEW

ANL

AAEC

J A E R I

CEA

H I T A C H I

ENEA

AECL

MOL

MOL2

AEEW-R 2 5 9 1

R E L A T I V E NUMBER D E N S I T I E S AT 1 0 0 0 DAYS H / P u " ~ = ; 2 0 0 / 1 -

I S O T O P E P r n l * ' S r n l L 9 S 1 3 ' ~ l S r n 1 5 2 G b 1 j 7

AEEN

ANL

AAEC

J A E R I

CEA

H I T A C H I

ENEA

AECL

MOL

MOL2

RELATIVE NUMBER D E N S I T I E S AT 2000 DAYS H / P u ~ ' ~ = 200/1

I S O T O P E H P u Z 3 • ÷ P u 2 ' 0 P u 2 * ' P U , * ~

AEEW

ANL

AAEC

J A E R I

CEA

H I T A C H I

Eh'EA

AECL

I S O T O P E X e 1 3 5 R h 1 • ‹ X e 1 3 1 C S ' ~ ~ N d l ' l N d h 5

AEEW

ANL

AAEC

J A E R I

CEA

H I T A C H I

ENE A

AECL

MOL

MOL2

AEEW-R 2 5 9 1

RELATIVE NUMBER DENSITIES AT 2000 DAYS H/Pu2" = 2 0 0 / 1

ISOTOPE P m i r 7 SmlLg Smlsl C n 1 5 2 Gd15'

AEEW

ANL

AAEC

JAERI

C EA

HITACHI

ENEA

AECL

MOL

N3L2

RELATIVE NUMBER DENSITIES AT 10 DAYS H/Pu2" = 2011

ISOTOPE H Pu239 P u Z q o P u z r l

AEEW

ANL

AAEC

JAERI

CE A

HITACHI

ENEA

AECL

MOL

MOL2

ISOTOPE X e 1 3 s Rhlo3 Xe13' Cs13, Ndlk3 Ndlh5

AEEW

AKL

A AEC

JAERI

CEA

HITACHI

ENEA

AECL

MOL

MOL2

AEEC-R 2591

RELATIVE NUMBER DENSITIES AT 10 DAYS H/PU')~ = 20/1 -

ISOTOPE P m l * ' Srn1'* S r n l s 1 G d i S 7

AEEW

ANL

AAEC

JAERI

C EA

HITACHI

ENEA

AECL

MOL

MOL2

RELATIVE NUMBER D E N S I T I E S AT 1 0 0 0 DAYS H / P u Z S 9 = 2 0 / 1

I S O T O P E H P u 2 3 9 P u 2 * 0 P u 2 * P u 2 " X e l o 5

AEEW

ANL

AAEC

J A E R I

CEA

H I T A C H I

ENEA

AECL

MOL

MOL2

I S O T O P E R h X e L 3 1 C S ' ~ ~ N d l Q 3 I . id145

AEEW

ANL

0 AAEC

J A E R I

CEA

H I T A C H I

ENEA

AECL

MO L

R E L A T I V E N U M B E R D E N S I T I E S AT 1 0 0 0 D A Y S - H / P U ~ ' ~ := 2 0 / 1

I S O T O P E P m " S r n l s s S m l s l S m i s 2 Gd 1 5 '

A E E W

A N L

AAEC.

J A E R I

C E A

H I T A C H I

E N E A

A E C L

MOL

MOL2

R E L A T I V E NUMBER D E N S I T I E S AT 2000 DAYS H / P u Z a 9 = 2 0 / 1

I S O T O P E H P u Z 3 • ÷ P u U o P u Z * ' P u 2

AEEW

ANL

AAEC

J A E R I

CEA

H I T A C H I

ENEA

AECL

MOL

MOL2

I S O T O P E

AEEW 0

ANL 0

AAEC 0

J A E R I 0

CEA - H I T A C H I 0

ENEA - AECL - MOL - MOL2 -

AEEW-R 2 5 9 1

RELATIVE NUMBER DENSITIES AT 2000 DAYS H/PuZs9 = 20/1

ISOTOPE Pml*' SmlL9 Sm15 Sm15' G d l S 7

AEEW

ANL

AAEC

JAERI

CEA

HITACHI

E!.IEA

AECL

M3L

MOL2

AEEW

A N L

A A E C

J A E R I

CEA

HITACHI

E X E A

AECL

MOL

MOL2

Each submission is represented by the same symbol and line on every graph.

m AEEW

x A N L

AAEC

J A E R I

+ CEA

A IIITACHI

+ E N E A

a AECL

v MOL

m MOL2

IRRADIATION 0 - 1 0 0 0 D A Y S D A Y S 1 0 0 0 - 2 0 0 0 DECAY

K-inf H/U235 = 200/1

..... .................. x ANL

.............. AAEC t

IRRADIATION 0 - 1000 DAYS DAYS 1000 - 2000 DECAY

I(E;Y

te AEEW t \ .. . . . . . .. .. ... . .. . .. . . ..... x ANL t


e AEEW

x A N L

AAEC

J A E R I

+ CEA

A I I I T A C I I I

v MOL

m MOL2

I R R A D I A T I O N 0 - 1000 D A Y S D A Y S 1000 - 2 0 0 0 DECAY

AEEW

ANL

AAEC

JAERI

CEA

HITACH1

ENEA

AECL

MOL

M O L 2

IRRADIATION 0 - 1000 D A Y S D A Y S 1000 - 2000 DECAY

I-I/U235 = 200/1 : U235 fission

/ x A N L / C

U . U U U 7 U -L


@ ~ 2 3 5 = 200/1 : ~ d 6 fission

0.00065

m * - - - - - - - - - - - - - - - - - - - - + -- /

te AEEW / --

m AEEW 1 . ... . . .. . . . .......... ...... x A N L

---.-.-------- e AAEC I - - - - - - - - - J A E R I t - - - - - - A HITACHI

- - - - v MOL

- - - m MOL2


H/U235 = 20/1 : U235 fission

AEEW

A N I,

A A E C

J A E R I

CEA

I l I T A C l I I

MOL

MOL2

I R R A D I A T I O N 0 - 1000 D A Y S D A Y S 1000 - 2000 DECAY

, / ~ 2 3 5 = 20/1 : ~ 2 % fission

m AEEW

x A N L

+ AAEC

B J A E R I

+ CEA

A HITACHI

+ E N E A

a AECL

v MOL

e MOL2


I-I/PU239 = 200/1 : PU239 fission

AEEW t A N L

J A E R I ? CEA I

AECL

MOL f


~ / . ~ 2 3 9 = 200/1 : ~ B 4 0 fission


H/PU239 = 200/1 : PU241 f ission

AEEW

A N L

J A E R I

H I T A C I I I

E N E A

AECL

MOL

M O L 2


I-1WU239 = 200/1 : p a 4 2 fission

I

I(EY

~s AEEW --

.. . .. . .. . .. ... . . . . .. . .. . . .. x A N L

----------.--- + AAEC --

- - - - - - - - - J A E R I

- - - - - - - c CEA --

- - - - - - A HITACHI

0.50 -- - - - - v MOL --

- - - e M O L 2

0.45 -- --

0.40 -- --

0.35 -- --

0.30 -- --

_------------------------______________________________________________________ - A

0.25 -- - - _ _ - _ _ - _ - _ _ _ - _ - - _ - - - - - - - - - - - - - - - - - - - - - - - - -----L .._.-__.______..___..-----.-~-----.-----..----.-------.-.-----.-------- Q

, I I I I L I I


I-I/PU239 = 20/1 : PU239 fission


~ , @ ~ 2 3 9 = 20/1 : P U ~ O fission

I R R A D I A T I O N 0 - 1000 D A Y S D A Y S 1000 - 2000 D E C A Y

II/PU239 = 20/1 : PU241 fission

e AEEW

x ANL

w J A E R I

A I IITACHI

v MOL

m M O L 2

IRRADIATION 0 - 1 0 0 0 DAYS DAYS 1000 - 2 0 0 0 DECAY

H F U Z ~ ~ = 20/1 : P-42 f iss ion


H / ~ 2 3 5 = 200/1 : 11 fract ional absorption


~ / U 2 3 5 @= 200/1 : U235 f r a d i o n a l abso rp t i on

KEY I Q AEEW

. . .. . ... .. . . . . . .. . . . . . . . . . . x ANI,

I R R A D I A T I O N 0 - 1000 DAYS DAYS 1000 - 2000 D E C A Y

11/U235 = 200/1 : U236 fractional absorption


H/U235 = 200/1 : Rh103 f rac t ional absorpt ion

A E E W

A N L

AAGC

J A E R I

C E A

I I I T A C I I I

E N E A

A E C L

M O L 2

DECAY I R R A D I A T I O N 0 - 1000 D A Y S D A Y S 1000 - 2000

N/U235 200/1 : Xe131 f r a d t i o n a l a b s o r p t i o n

. 'om +,y , ,*, , ,4;7 ,,, .x


H/U235 = 200/1 : Cs133 fract ional absorption

AEEW

ANI,

AAEC

J A E R I

CEA

IIITACHI

ENEA

AECL

MOI.2

200 400 600 000

IRRADIATION 0 - 1000 DAYS

1000 1200 1400 1600 1800 2000

DAYS 1000 - 2000 DECAY

W/U235 @ 200/1 : Nd143 f r a a i o n a l absorption

- - - - - - A HITACHI I - - - - - + ENEA

IRRADIATION 0 - 1 0 0 0 D A Y S D A Y S 1 0 0 0 - 2000 DECAY

H/U235 = 200/1 : Ndl45 fract ional absorp t ion

AEEW

A N L


H / U 2 3 5 200/1 : Pm147 f r a t i o n a l ab so rp t i on


0

r i I a

H/U235 = 200/1 : Sm149 f rac t ional absorpt ion

0.020 -- KEX / /+--

m AEEW / /

/ 0.018 -- ........................... x ANL

----.-.....--- CB AAEC

0.016 -- - - - - - A - - - m JAERI

- - - - - - - + CEA

- - - - - - A IIITACHI 0.014 -- -- - - - - - + ENEA

- - - - + AECL 0.012 -- --

- - - - v MOL - - * - - + _ - - - - - - m MOL2 - - - - - -

0.010 -- --

0.000 -- --

0.006 -- / v -- / - -

--

0.002 -- I I I I I I I 4 --


~ / U 2 3 5 200/1 : Sm151 f r m i o n a l abso rp t i on

+ - - - - - - - - - - - - - - - - - - - - - - -

/ /

/

KEX

e AEEW

. . .. . . .. . .. . .. . ... .. .. . . . . . x A N L

- - -- - -- -. ..--- * AAEC

- - - - - - - - - ep J A E R I

- - - - - - A IIITACIII

- - - - - + E N E A

- - - - e AECL

- - - e MOL2

200 400 600 DO0 1000 1200 1400 1600 1000 2000


H/U235 = 200/1 : Sml52 fractional absorption

AEEW

A N L

AAEC

J A E R I

FIITACIII

E N E A

AECL

I R R A D I A T I O N 0 - 1 0 0 0 D A Y S D A Y S 1 0 0 0 - 2000 DECAY

II/U235 200/1 : Gd157 f r a w i o n a l a b s o r p t i o n .


H/U235 = 200/1 : Total Fission Produc t - Xe135 f r ac t iona l absorpt ion

m A E E W

x A N L

w A A E C

J A E R I

+ C E A

A H I T A C A I

v MOL

m M O L 2

I R R A D I A T I O N 0 - 1000 D A Y S D A Y S 1 0 0 0 - 2000 DECAY

I-I/U235 = 20/1 : T O Q ~ Fiss ion P r o d u c t - a 1 3 5 f r a c t i o n a l a b s o r p t i o n

KEY

m A E E W

x ANI,

A A E C

J A E R I

A A I T A C N I

+ E N E A

e A E C L

v MOL

m M O L 2


H/Pu239 = 200/1 : Tota l Fission P r o d u c t - Xe135 f r a c t i o n a l absorp t ion

KEY

m A E E W

x A N L

A A E C

J A E R I

A I I ITACFII

v MOL

m M O L 2


H/Pu239 = 20/1 : ~ b a l Fission Product - e e l 3 5 fraction,al absorption ,

Documents

UNCLASSIFIED AEEW-R 2591 NEACRP-A-995 NEACRP-L-324...NMAT 2 1 NMESH 2 NREGION 2 NREACT - (number of edits) PREOUT INITIATE AEEW-R 2591 MATERIAL 1 -1 303 1 3001 0.04 2235 O.6002 MATERIAL2