LBL- 40 c.J- PHYSICS Annual Report July 1970 through June 1971 I rm r Lawrence Berkeley Laboratory ~ University of California-Berkeley n.O ~ This work was done under U.S. Atomic Energy Commission contract W-7405-eng-48. Some results reported in this document may be preliminary or incomplete. The Lawrence Berkeley Laboratory requests that this document not be quoted without consultation with the author or the Technical Information Division . "-. Printed in the United States of America Available from National Technical Information Service U.S. Department of Commerce 1'\?85 Port Royal Road SpLingfield, Virginia 22151 Price: Printed Copy $3.00; Microfiche $0.95 DISCLAIMER This document was prepared as an account of work sponsored by the United States Government. 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LBL-40 UC-34 Physics TID-4500 (58th Ed.) PHYSICS Annual Report July 1970 through June 1971 W. A. Wenzel Associate Director for Physics LAVVRENCE BERKELEY LABORATORY University of California Berkeley, California -iii- PHYSICS ANNUAL REPORT July 1970 through June 1971 Contents PHYSICS RESEARCH EXPERIMENTAL PHYSICS, GROUP A: Solmitz K82 Experiment 0 K+p -+ 'lT+_f K 1 Virtual 'IT p Scattering 1 Low-Mass K'lT'lT Systems 1 Quasi-Three-Body Final States 1 K'lT Scattering . 1 rr82 Experiment 2 A 2 Mass Spectrum A2 Branching Ratios 2 f 0 Mass Spectrum 2 Anomaly in the 'lT+'lT- System 2 B Meson 3 Two-Body Final States . 3 Photoproduction Experiment 3 K70 Experiment. 4 Antiprotons in Deuterium 4 'IT-p Inelastic Reactions 4 'lT66 E~periment 'lT+d Interactions from 2. 7 to 4.2 GeV /c. 5 'IT d Interactions from 1.1 to 2.4 GeV/c. < 5 P65 Experiment. 5 K65 Experiment 6 Study of K-p-+ ~'lT'lT 7 ~N Interactions 7 ~ Lifetimes and Branching Ratios 7 K63 Experiment Resonance Production inK-p Interactions 7 K-p Four-Prong Reactions 7 Associated Production Experiment 7 Spark-Chamber and Counter Studies Neutral Final States in 'lT-p Interactions 8 0 Polarization Par8-meter in 'IT-;- n'lT 8 Study of 'lT-p-+ n'lT , nn, and n'lT 'lT 0 8 Cosmic-Ray Experiments High-Altitude Particle Physics and Cosmic-Ray Experimental Facility. 9 \ LBL-SLAC Cosmic-Ray Experiment 10 \ Search for Monopoles. 11 Detector Development Detectors Using Liquified Noble Gases 11 Multiwire Proportional Chambers 12 External Muon Identifier 12 Particle Data Group 13 Data-Reduction Operations 13 Programming Effort Bubble -Chamber Programs 15 Spark-Chamber Programs 15 ,,, Streamer-Chamber Programs -16 .,.Preceding Physics Reports: UCRL-20120, UCRL.:.19415 -iv- General Support . 16 Publications and Papers . 16 EXPERIMENTAL PHYSICS: Moyer-Helmholz n -p Charge Exchange at NAL Energies 21 Charge-Exchange Polarization .... 21 Neutral Decay,., Modes of the 11° Meson 22 Search for N' ( 1680) --+ 11° n .22 n°n° Interaction . .23 Optical Pulsars . .23 f.l- -Capture Nuclear Gamma Rays ............................... 24 Study of K + -+ n + n -e + v . 24 Neutral Decay Modes of the KL ................................ 24 Electromagnetic Delay Line Readout for Proportional Wire Chambers ........... 25 np-+ yd: Test of Time Reversal ..... .26 p + d--+- y + 3 He: Test of Time Reversal. 26 n° Form Factor Experiment . 27 Publications and Papers . 27 EXPERIMENTAL PHYSICS: Lofgren Diboson Production . ..... 29 (K+-+ e + v)/(K+--+ f.l + v) Branching Ratio 29 • • 0 + - + - ± -=F L1m1ts on K L--+ f.l f.l , e e , e f.l 30 Studies of K~ --+ 1r.~ v Decays . : . 30 K~ and K ° Charge Asymmetry .31 3 1 3 K 0 Polarization Measurement. 31 f.l3 Publications and Papers .... 31 EXPERIMENTAL PHYSICS: Powell-Birge K-p Interactions: 0.85 to 1. 70 GeV /c . 33 n+ p Int~ractjons: 2.1 to 2. 7 GeV /c .. .34 TI+p-+p p ++ .. • . • • • .... 34 TI+p--+ ~0 i>+ . •. 34 TI p--+ w6 .........•. 34 B Meson. ...... 34 TI + p In terachons:. 1 .1 to 2. 0 G e V / c 35 Diffraction Disassociation of the Proton . .35 Cloud Chamber Quark Quest -35 Data Reduction . 36 yd Interactions at 5.5 GeV /c 37. Publications and Papers . ......................... 37 EXPERIMENTAL PHYSICS, GROUP R: Crowe Radiative Capture Experiments Helium-4 Spectrum ................................... 39 Carbon-12 Spectrum . 39 16 24 40 Spectra for 4He, 12c, 0, Mg, and Ca . 39 M·Jon Depolarization Studies . 40 S-Wave TITI Scattering Length . .41 1-v- K° Charge Asymmetry . 42 JJ.3 Publications and Papers . ... 42 EXPERIMENTAL PHYSICS: Segre -Chamberlain K-Mesic and I:- -Hyperonic X Rays . 45 + + Search for K ...... fJ. + v + v + v ... 46 0 Asymmetry in 7T- + p -+ 7T + n . 46 Low-Energy 7T- p Interactions 46 pp and pd Interactions . 47 T = 2 Elastic 7T7T Cross Sections 48 7T+ 7T - El ast1c. S catter1ng. 48 Polarized-Proton Target Development . 49 Development of Proportional Wire Chambers. .49 SPEAR Experimental Program. 49 Publications and Papers . 50 EXPERIMENTAL PHYSICS: Trilling-Goldhaber K+ d Interactions at 12 GeV /c O~servation of Antiomega . 53 K n Charg~ Exchange . 54 Narrow KN Enhancement . 54 Study of K*(1420) Region . 54 Structure in the KTI Mass System . 54 Coherent Production of Q and L . ....... 54 7T+p Inte-ractions at 3.7 GeV/c A2 Mass Spectrum . 55 Interfering Resonances and the A . 55 2 Search for C Violation Via p 0 Interference .......................55 Charge Asymmetry on the w Dalitz Plot . 55 0 Regge-Pole Effects in p ~ ++and w o ~++Production. · . · . · . 56 Model for V 0~ ++ Production · · · . 56 Comparison of ~ T) and ~ T) ' Production. · · · . · · · . · . ·56 Ap Interactions from 0.5 to 5 GeV /c 56 SPEAR Project · · · · · · · · · · · 57 Publications and Papers · · · · .. · . · · · . · · · .......... · · .. · .. · · .. 57 THEORETICAL PHYSICS: Chew Particle Theory S-Matrix Properties and the "Real World" · · · · . · · . · · .. · · .. · .. · · · 61 Hadron S-Matrix Bootstrap Hypothesis · · · · · · · · · .. · · · · · · · · · · · · · 61 Regge Asumptotic Behavior· · · · · · · · · · · · · · · · . · · . · · · · . · . · · · · 63 Dual-Resonance Model· · · · · .. · · · · · · · · . · · . · · .. · · . · . 64 "Classical" S-Matrix Theory · · · · · · · · · · · . · · · · · · · · · · · · · . · · . · 64 Field-Theoretical Studies · · 65 Particle Accelerators · · · · · · · · · · · · · · · · · · · · · · · · · • . · . · · · · · · . 66 Nuclear Physics· 67 Atomic Physics · 67 Plasma Physics· 68 Graduate Students . 68 Publications and Papers. 68 ATOMIC BEAM GROUP: Shugart Hydrogenlike and Helim:nlike Atoms· · · · .. · · .. · .. · · .. · ............ 77 -vi- Hyperfine Structure of 69Ga .................................. 78 Differential Stark Shift . 78 Metastable He, Ar, Kr, Xe, H , D ................_ ... ~ ......... 79 2 2 Spins, Hyperfine Structure, Magnetic Moment of Cesium Isotopes. 80 Rf Resonance Technique . 81 Test for Mercury in Food .82 1 Metastable Lill 2 s ..... 82· 0 Polarization of Cascade Photons 82 Publications and Papers . 83 CON TROLLED THERMONUCLEAR RESEARCH AND PLASMA PHYSICS: Kunkel Research Program . 85 Publications and Papers. 87 HEALTH PHYSICS: Patterson Radiation Levels in Aircraft . 89 Therapy with Heavy-Ion Accelerators· 89 ICRP Publication 15 . 89 (n, p) Differential Scattering Data . 89 Spark-Chamber Neutron Spectrometer . - .. - · - ... · - · .. - . - ..... - . 89 Neutron Monitoring System - . · · · . · .. · · ... 90 Shielding Studies at 28 GeV. · · · · .. - ... · . · · · · · · .. ...... - . - . 90 Ground-Water Contamination by High-Energy Accelerators · ............. - .. 90 V<:n Allen Belt Radiation Damage· · - 91 88-Inch Cyclotron Radiation Study · · 91 Trace -Element Identification · . · · . 91 High-Energy Beam Monitoring· · · · ..... - .. · · · - · - ... : . 91 Publications and Papers .. · · · · · . - . - .... · · · · · · .... - .... - ... 92 NUCLEAR EMULSION GROUP: Heckman Variations of Inner-Zone Protons - 95 Geomagnetically-Trapped Particles 96 Rigidity Spectra of Heavy Ions · · - 97 Magnetic Bremsstrahlung -97 Publications and Papers · 97 COMPUTING AND DATA HANDLING MATHEMATICS AND COMPUTING: Baker Applications Programming . Physics · ·. · · · · · · · · . · . · . · · · · · · · · · · · . · . · - · · · · · . 99 Accelerator and Magnet Design - . - - . · . · · · . 100 Nuclear Chemistry ... - - ... - ..... - ......... - .... - .. - ..101 Biology and Medicine ..................... - . 101 General and Engineering ........................... - ... ·103 Systems Programming 6600 System · · · · · · · . - . - - .... - ..................... 103 7600/6215 System· · ~ 104 Interactive Systems · 104 Remote Batch - ... 104 -vii- COM (Computer Output to Microfilm). .......... 104 Computer Operations . ......... 104 User Services Group. .......... 105 Mathematics and Computing Research Partial Differential Equations . 105 Ordinary Differential