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π⁺ Photoproduction at Angles from 50° to 165° CM. and Energies from 500 to 1350 MeV


Thiessen, Henry Archer (1967) π⁺ Photoproduction at Angles from 50° to 165° CM. and Energies from 500 to 1350 MeV. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/A91P-5Z84.


The cross section for the reaction γ + p → π⁺ + n was measured at the Caltech synchrotron. The π⁺ was detected in a multichannel magnetic spectrometer, and the data were recorded in the memory of a pulse height analyzer. The results are presented in the form of energy distributions at 12 fixed laboratory angles from 34° to 155°. cross section measurements are reported with photon energies between 500 MeV and 1350 MeV. No detailed fitting of the entire angular range was attempted; however, a narrow bump in the cross section at 180° is explained as the effect of a cusp at the eta meson threshold.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:(Physics and Economics)
Degree Grantor:California Institute of Technology
Division:Physics, Mathematics and Astronomy
Major Option:Physics
Minor Option:Economics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Walker, Robert Lee
Thesis Committee:
  • Unknown, Unknown
Defense Date:27 September 1966
Record Number:CaltechETD:etd-10042002-155413
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3901
Deposited By: Imported from ETD-db
Deposited On:07 Oct 2002
Last Modified:16 Jun 2021 20:46

Thesis Files

PDF (Thiessen_ha_1967.pdf) - Final Version
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