From Nuclei to Neutrinos

The Naming of the

Denys Wilkinson Building

21 June 2002

Nick Jelley

dd

29 MeV 3He on 14N1962

The Optical Model

10 100 MeV

p 3Hd

3He4He

Particle Identification

E E

Particle Identification

40 MeV protons on carbon1967

p

d

3H4He

114 MeV 12C beam on carbon1974

Selectivity in Heavy-Ion Reactions

Excitation Probability

High Spin

Low Spin

114 MeV 12C and 11B beams on carbon

40Ca(16O,2np)53Com

Radioactivity

49 MeV 16O beam on calcium1970

53Com

245 ms half-life

Proton

Discovery of 14C radioactivity1984

E-E telescope

Alpha-decay of Heavy Nuclei1990

Geiger-Nuttall Plots

14C dating

Nature1978

14C

13C

14C13C

modern

old

The Oxford Microprobe 1986

p-induced X-rays

Magnetic Moments of Excited States 198419F + 1H 16O* +

6.13 MeV 3

g0.556(4)

0o

90o

6.13 MeVstopped flight

19F

foil stopper

0o

90o

16O

1+ 13.19 MeV 20Ne 16Ogs

11.26 MeV

Parity Violation 1957 1983

decay of 8Li and 8B: The Second-Class Current Problem

19718B 8Be* + e+ + 8Li 8Be* + e +

second-class current gIT = 2.103

|gIT | < 7.104

8B 8Be* + e+ +

Solar Neutrinos

Sudbury Neutrino Observatory

Reactions in SNO

-Good measurement of e energy spectrum-Weak directional sensitivity 1-1/3cos()

-Measure total 8B flux from the sun.

NCxx

npd

ES -- eνeν x x

-Low Statistics-Strong directional sensitivity

CC-eppd e

e only

Equal cross sectionfor all types

All types butenhanced sensitivity to e

A Neutrino Event

Signal Extraction Results

CC 1967.7 +61.9 +60.9

+26.4 +25.6ES 263.6

+49.5 +48.9NC 576.5

SNO CC SNO NC

1

2

3

4

5

6

7

Standard Solar Model

flux

1/3 SSM

SNO Results 2002

5.3

106 cm-2 s-1

Flavour Oscillations

Oscillations before SNO

Combining All Experimentaland Solar Model information

after