平和記念資料館製本編集 190208hpmmuseum.jp/modules/xelfinder/index.php/view/1798/14...T57D \ ç d S2) Q b c î ¡ Ü µ ª \'g%Ê'2 d _ v W \( Ø bABCC, 8)z5 N 0[ Ó K S

$Page 1: 平和記念資料館製本編集 190208hpmmuseum.jp/modules/xelfinder/index.php/view/1798/14...T57D \ ç d S2) Q b c î ¡ Ü µ ª \'g%Ê'2 d _ v W \( Ø bABCC, 8)z5 N 0[ Ó K S$
T65D DS86DS02

T65D DS86 DS02

29 2017

2

20 1945

22 1947ABCC ABCC 12

8.2 3.8 ABCC50 1975

RERF 1)

ABCC 31 1956

32 1957ABCC

1

広島原爆線量評価に果した被爆建造物および被爆資料の役割（その１）－残留放射能の深度分布

T57D 2) ABCC31 1956

ICHIBAN 3), 4)

38 1963PTBT

500mHPRR

60Co 1200 Ci 1965T65D 1965 5)

19602 8

ICRP 106) 1970

T65D3

4, 7)

56 1981 5 161 1986 3

5 62 1987DS86 Dosimetry System 1986 DS86

T65D 1/10 8)

1.5km 2 1/21/3 DS86 ICRP1990

DS86 60Co 9)

152Eu 36Cl63Ni 41Ar

1980

40

63Ni DS86 DS862003 DS02 10, 11)

61 1986 15 2003

2

KEK G D Kerr, W Young, H M Cullings, T Straume, A A Marchetti, S D Egbert, D C Kaul, W Rühm, E. Nolte

3.1 Sublette 12) 89

50.0 kg 50 14.1 kg 50.0 14.1 64.1 kg235U 89 50kg 235U 50

0.89=44.5 kg 50 14.1kg 235U14.1 0.50=7.05 kg 235U 44.5 + 7.05 = 51.55 kg

235U 51.55/64.1 0.8042 = 80.4 12) 2 Projectile Target

Projectile : 4” 6.25” 9 38.5 kg (60 ) Target : 4” 7” 6 25.6 kg 40

235U 235U Glasstone 13) 1 kT TNT = 1012 cal or 1.45 1023 fission or 235U 57 g

16 kT 14) 16 1.45 1023 fission = 2.321024 fission 235U 16 57(g) = 912g 235U 51.55 kg 0.912 kg = 50.638 kg 235U 0.912 kg/51.55 kg =0.0177 (1.8 %)

15 Pu 10kg1kg 21 kT 21 kT

14) 239Pu 1kg=20 kT 16) 6.2 kg 17) TNT kT

239Pu 1kg 1kT/20 kT 0.05 kg 21kT239Pu 0.05 kg 21 kT = 1.05 kg 1 kg 239Pu 1 kg/6.2 kg = 0.161 16 235U

2 MeV

MeV608 2.9 km 2

3


4

T65D32S(n, p)32P 14 d

59Co(n, )60Co ( 5.2 y)51 1976

2 in situ 20)

152Eu 13 y21,22) 152Eu 13 y 60Co (5 y 1980

1990 1970NaI(Tl)

6 1994 63Cu(n, p)63Ni 100 y 23)

AMS 35Cl(n, )36Cl ( 3 105 y) 152Eu 60Co 36Cl 3

152Eu(n, )152Eu 152Eu 50 cm 152Eu

152Eu(1) (2) (3) (4)

4

5


(1) 132 m 101 m100 140 4 4

24 25 26

15 1926 27 641989 1 5

24 25 26

59 1984 10 30

5 62

7

6

7


1989 41992 5 28

4 2

2 8 29

82.5cm 2cm2 4

9EG&G Ortec, GEM-15190S 10

124 cm3 28

8

9


(2) ( 398 m)4

3

30 31)

13

2 461971 11

32

46 1971 20 m

16 200433

2 1990 1 24

2 1990 2 1

1112

10

13 31

25 2013 14

34

54 cm1 6.8cm, 77cm72 cm 1 22cm 18cm 25cm 5.5cm

90 cm 20 cm19.5 cm

1cm 25 cm

11


(3) 478 35

36 37)

38 39 40)

20 1945 30 195563 1988

63 1988 7

63 1988 127 15

16

68cm, 820cm 5cm2 4

12

(4) 260m41

2 1927 5

17 251950 37 1962

418 19

220 41)

13


14

1 25cm 2cm No.1 No.60

42) 62 1987DS02 17 2005

DS02 4.3 No.1

21 59 1984 12 2886389

238U 226Ra 241Pb 214Bi (232Th)228Ac 212Pb 212Bi 208Tl 40K

152Eu 13.5 y 122244 344 779 867 964 1084 1112 1408keV

154Eu 8.6 y 123 723 1274 keV

15


No.1 No.41 122 keV 344 keV 22

105cm 25cm

15 55cm 4235 55 cm

15cm

16

Eu mg 152Eu Bq

S = Y A ( 1 1+ 2 2+ )/(M 103) Bq/mg

Y 151Eu A =

= 152Eu s-1 M = Eu

i = i i = i 152Eu n,

cm2 2 Eu 0.85 1.05

g/g S 23

17


2 cm1 43)

9 1997 24

relaxation lengthI(x) = I0 exp(-x/L) L

e-1 1/2.74

10 cm

18

DS86 DS0244)

128 m 25

MP1 (MP2) 152Eu36Cl

Nagashima Ruehm Straume152Eu 36Cl

19


36Cl 152Eu 20 36Cl152Eu 36Cl poison

B Sm Gd Eu Dy45) 36Cl

152Eu 152EuDS02 15cm

20

398 m 152Eu 36Cl

DS02, DS86 26 152Eu36Cl 36Cl

20

152Eu 36Cl 40cm

Cl cm 36Cl

478 m 152Eu 36Cl 27

152Eu 36Cl5g/cm2

Sm Gd

21


152Eu 36Cl 36Cl36Cl 1/3 Cl

DS0230

500 m 4152Eu 36Cl

DS86 DS02DS02 10 cm

82cm

22

1) 1992 1992pp.11-12.

2) 20122 pp.20-21.

3) Auxier JA. (1975): Physical Dose Estimation for A-bomb Survivors – Studyat Oak Ridge, USA J. Radiat. Res. Suppl. 1-11.

4) 1984 ICHIBAN5) 1992 1992

p.13.6) 2011 p.168.7) Whalen PP. (1987): Calculation and verification of source terms. In U.S.–

Japan Joint Work shop for Reassessment of Atomic Bomb RadiationDosimetry in Hiroshima and Nagasaki. Radiation Effects ResearchFoundation. 37-65.

8) Radiation Effects Research Foundation (1987): US-Japan JointReassessment of Atomic Bomb Radiation Dosimetry in Hiroshima andNagasaki (DS86), Final report. Vol. 1, 2,

9) Kerr GD, Hashizume T, Edington CW. (1987): Historical review in US-JAPAN Joint Reassessment of Atomic Bomb Radiation Dosimetry inHiroshima and Nagasaki, Final report Vol.1 p. 1-13.

10) Radiation Effects Research Foundation (2005): Reassessment of theAtomic Bomb Radiation Dosimetry for Hiroshima and Nagasaki DosimetrySystem 2002, Volume 1, 2.

11 20122 p.22.

12) Sublette C. Nuclear weapons frequently asked questions Version 2.18: 3July 2007 : http://www.fas.org/nuke/hew/Nwfaq/Nfaq8.html, 21 2009 3 25 Little Boy-Wikipedia, the freeencyclopedia, http://en.wikipedia.org/wiki/Little_Boy 21

2009 3 2513) Glasstone S, Dolan PJ (1977) The Effects of Nuclear Weapons

kT TNT = 1012cal or 1.45x1023 fission or 235U 57 g14) Kerr GD, Young RW, Cullings HM, Christy RF, Bonb parameters, Radiation

Effects Research Foundation (2005): Reassessment of the Atomic BombRadiation Dosimetry for Hiroshima and Nagasaki Dosimetry System 2002,Vol. 1, p.53.

15) 2526 3 p. 13.

16) https://ja.wikipedia.org/wiki/ 22 201010 26

17) https://ja.wikipedia.org/wiki/ 22 2010

23


10 26 18) Whalen PP, Calculation and verification of source terms, RERF (1987): US-

Japan Joint Reassessment of Atomic Bomb Radiation Dosimetry inHiroshima and Nagasaki (DS86), Final report. Vol. 1, p.42.

19) Santro RT, Egbert SD, Barnes JM, Kerr GD, Pace JV, Robers JA, SlaterCO, Radiation transport calculations for Hiroshima and Nagasaki. InRERF (2005): Reassessment of the Atomic Bomb Radiation Dosimetry forHiroshima and Nagasaki Dosimetry System 2002, Volume 1, pp.139-222.

20) 40 61 19867 24 p.250.

21) Sakanoue M., Maruo Y. and Komura K., 1981 Distributions andcharacteristics of Pu and Am in soil, in Int. Symp. Meth. Low-LevelCounting and Spectrometry. IAEASTI/PUB/592, pp.105-124 (Vienna:International Atomic Energy Agency).

22) 1983 : Ge in situ . IsotopeNews 7 pp. 2-5.

23) Shibata T., Imamura M., Shibata S., Uwamino Y., Ohkubo, T., Satoh S.,Nogawa N., Hasai H., Shizuma K, Iwatani K., Hoshi M., Oka T. J. Phys.Soc. Japan 63 (1994) 3546-3547.

24 481973 8 6 103 104

25)59 1984 8 6 p.149

26)8 1996 3 31 p.47

27 64 1989 1 5 28 4 1992 5 26 29

8 1996 3 31 p. 47. 30

59 1984 8 6 p.174 177. 31

8 1996 3 31 p. 129. 32 33 2004

p.76 34 25 2013 10 14 35

http://www.city.hiroshima.lg.jp/www/contents/1121423263584/index.html 29 2017 9 10

36) Wikipedia: https://ja.wikipedia.org/wiki/ 292017 9 10

24

37) http://www.pref.hiroshima.lg.jp/site/bunkazai/bunkazai-data-202050270.html 29 2017 9 10

38) 40 61 19867 24 p.90.

39) 488 6 99.

40) 8 1996 3 31 p. 61.

41) 8 1996 3 31 p. 62-63.

42) Hasai H, Iwatani K, Shizuma K, Hoshi M, Yokoro K, Sawada S, Kosako T and Morishima H, Europium-152 Depth Profile of Stone Bridge Pillar Exposed to the Hiroshima Atomic Bomb:152Eu Activities for Analysis of the Neutron Spectrum. Health Physics, 53 3 (1987) 227-239.

43) Shizuma K, Iwatani K, Hasai H, Hoshi M and Oka T, Europium-152 depth profiles in granite and concrete cores exposed to the Hiroshima bomb. Health Physics.72(6); 848-855 (1997).

44) Egbert SD, Cullings HM, Survivor dosimetry, RERF (2005): Reassessment of the Atomic Bomb Radiation Dosimetry for Hiroshima and Nagasaki Dosimetry System 2002, Volume 2, pp. 894-900.

45) Ruehm W, Huber Y, Kato K, Nolte E, Imanaka T, Egbert SD, Factors affecting neutron measurements and calculation, RERF (2005): Reassessment of the Atomic Bomb Radiation Dosimetry for Hiroshima and Nagasaki Dosimetry System 2002, Volume 2, p. 737-745.

25


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平和記念資料館 製本編集 190208hpmmuseum.jp/modules/xelfinder/index.php/view/1798/14...T57D \ ç d S2) Q b c î ¡ Ü µ ª \'g%Ê'2 d _ v W \( Ø bABCC, 8)z5 N 0[ Ó K S

平和記念資料館製本編集 190208hpmmuseum.jp/modules/xelfinder/index.php/view/1798/14...T57D \ ç d S2) Q b c î ¡ Ü µ ª \'g%Ê'2 d _ v W \( Ø bABCC, 8)z5 N 0[ Ó K S