University of Illinois Urbana-Champaign

A test of parity conservation in proton-proton scattering at 15 MeV

Potter, James Martin

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Description

Title
A test of parity conservation in proton-proton scattering at 15 MeV
Author(s)
Potter, James Martin
Issue Date
1975
Director of Research (if dissertation) or Advisor (if thesis)
Frauenfelder, Hans
Department of Study
Physics
Discipline
Physics
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
  • proton-proton scattering
  • decay parity
  • necleon-necleon scattering
  • parity non-conservation
Language
en
Abstract
An experiment has been performed at the Los Alamos Scientific Laboratory tandem Van de Graaff to test the conservation of parity in proton-proton scattering. A parity violating effect was sought bv measuring the correlation bet\<1een the total p-p cross section and the he1icity of the incident beam. The experiment used integral counting techniques to achieve the high data rate required. The Van de Graaff Lamh-shift polarized ion source was modified to permit reversing the direction of polarization at a 1 kHz rate. The experiment used analog signal processing; the corre1at1.on between the cross section and the beam he1icity was measured using a phase-locked amplifier. The means for rapidly reversing the beam polarization and the methods for reduction of systematic errors are discussed. The measured longitudinal asymmetry AL=(δ+-δ_)/(δ++δ_) for p-p scattering at 15 MeV is (-1.8 ± 2.0) X 10-7 and the 95% confidence 6x 10-7 including the effects of systematic errors.
Type of Resource
text
Permalink
http://hdl.handle.net/2142/30761
Copyright and License Information
© 1975 James Martin Potter

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