TABLE OF CONTENTS

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     Introduction

1. Fundamental Symmetries, Weak Interactions and Nuclear Astrophysics ............................ 1
1.1 Beta delayed alpha spectra from  and  decays and the neutrino spectrum in  decay ............................ 1
1.2 Progress in the Mass-8 -decay experiment ............................ 2
1.3 The  correlation in  decay .............................3
1.4 Determining the response function of a silicon surface barrier detector ............................ 4
1.5 Spin-decomposition of the GT strength in  decay ............................ 5
1.6 Beta decay of  and the efficiency of the ICARUS  neutrino detector ............................ 6
1.7 Large helium cell for measurement of the spectrum of photons in ............................ 7
1.8 Target and apparatus development for a planned  experiment ............................ 8
1.9 Measurement of the PNC spin-rotation of cold neutrons in a liquid helium target ............................ 9
1.10 NSAC - data acquisition for the neutron spin rotation experiment .......................... 10
1.11 Design and testing of a  ionization chamber for use in measuring the velocity profile of a cold neutron beam ...........................11
1.12 Development of the data analysis code, DANSR, for the neutron spin rotation experiments .......................... 12
1.13 Time reversal in neutron beta decay--the emiT experiment .......................... 13
1.14 Detection of radio-frequency pulses associated with cosmic ray air showers .......................... 14
1.15 Construction of a new high-precision rotating torsion balance .......................... 15
1.16 Design and testing of autocollimators for the Eötwash experiments .......................... 16
1.17 A short-range test of the Equivalence Principle .......................... 17
1.18 On the translation of multipoles for a 1/r potential .......................... 18
  
2. Neutrino Physics .......................... 19
2.1 The neutral current detector project at the Sudbury Neutrino Observatory (SNO) .......................... 19
2.2 The SNO data acquisition system .......................... 20
2.3 The SNO electronics production testing system .......................... 21
2.4 Extensions to the SNO DAQ software .......................... 22
2.5 SNO data acquisition software development .......................... 23
2.6 Progress on the acrylic vessel for the Sudbury Neutrino Observatory .......................... 24
2.7 Development of a compact 20 MeV gamma-ray source for energy calibration at the Sudbury Neutrino Observatory .......................... 25
2.8 SAGE: The Russian American Gallium Experiment .......................... 26
 
3. Nucleus-Nucleus Reactions .......................... 27
3.1 Preequilibrium particle emission and the GDR in Sn nuclei .......................... 27
3.2 Quasi-elastic and fusion barrier distributions for .......................... 28
3.3 Projectile mass dependence of fission fragments anisotropies for heavy-ion induced fission on  at near-barrier energies .......................... 29
3.4 Fission fragment anisotropies in the ,  reactions .......................... 30
3.5 Search for an entrance channel dependence of fission anisotropies .......................... 31
3.6 Influence of target spin on sub-barrier fission fragment anisotropies .......................... 32
 
4. Ultra-Relativistic Heavy Ions .......................... 33
4.1 Event simulation of high-order Bose-Einstein and Coulomb correlations ...........................33
4.2 Wave function collapse: Schrödinger’s Cat and HBT simulations .......................... 34
4.3 Finite Coulomb size and finite resolution effects in NA49 mixed-charge pion correlations .......................... 36
4.4 Phase space filling systematics and superradiance in ultrarelativistic heavy ion collisions .......................... 37
4.5 Coulomb radii for STAR single event physics? .......................... 38
4.6 Application of SControl to the STAR TPC gas system .......................... 39
4.7 Event-by-event physics at SPS and RHIC .......................... 40
4.8 Scaled correlation analysis applied to NA49 main TPC data .......................... 41
4.9 STAR trigger internal review .......................... 42
4.10 DCC simulations ...........................43
4.11 Human face recognition by scaled correlation analysis ...........................45
4.12 NA49 distortion corrections and system geometry ...........................46
4.13 Large volume NA49 data analysis at UW-NPL ...........................47
4.14 Anomalous event generation for EbyE physics .......................... 48
4.15 NA49 TPC cluster shape analysis ...........................49

5. Atomic and Molecular Clusters ...........................50
5.1 Fragmentation of C60 in collisions with hydrogen ...........................50
5.2 Alkali carbide fragmentation: a new path to doubly-charged negative ions ...........................51
 
6. Electronics, Computing and Detector Infrastructure ...........................52
6.1 Electronic equipment ...........................52
6.2 VAX-based acquisition systems ...........................53
6.3 Data analysis and support system developments ...........................54
6.4 SNO NCD electronics ...........................55
6.5 A custom VME-base data acquisition system for the emiT experiment ...........................56
6.6 Triple NaI detector set-up for measurement of high-energy -rays ...........................57
6.7 Electronics for triple NaI-detector set-up ...........................58
6.8 A precision generating voltmeter for reading deck voltage ...........................59
6.9 Mass 8 apparatus electron detector additions ...........................60
6.10 A new computer system for the NPL ...........................61
 
7. Van de Graaff, Superconducting Booster and Ion Sources ...........................62
7.1 Van de Graaff accelerator operations and development ...........................62
7.2 Booster operations ...........................63
7.3 Tandem terminal ion source ...........................64
7.4 Cryogenic operating experience ...........................65
7.5 Improvements to the accelerator control system ...........................66
 
8. Outside Users ...........................67
8.1 Targetry for RFQ production of radionuclides from  3He irradiation of and ...........................67
8.2 Proton induced solar cell degradation ...........................69
8.3 Tests of radiation hardness of charge coupled device under expose to protons ...........................70
 
9. Nuclear Physics Laboratory Personnel ...........................71
 
10. Degrees Granted Academic Year 1996-1997 ...........................73
 
11. List of Publications from 1996-1997 ...........................74