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V-Particle Production


Shelton, Frank Harvey (1953) V-Particle Production. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/79GV-BM08.


NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. In set of about 23,000 cloud chamber photographs, 37 V[...]-particles and 9 charged V-particles were produced in nuclear interactions in a lead plate between two cloud chambers in a magnetic field. An analysis of the circumstances of occurrence of V-particles strongly indicates that the V-particles were produced principally by mesons. Production of V[...]-particles by nucleons is also indicated. By a study of the multiplicity of the stars containing V[...]-particles, the average momentum of the particles producing V[...]-particles is found by several methods to be about 10 Bev/c. At present it appears that all V[...]-particles were produced by particles having momenta in excess of about 2 Bev/c. It is found that the V[...]-particle is produced in the center-of-mass system with about 400 Mev/c momentum. In order that the cross-section for V[...]particle production be checked, an interaction length for penetrating shower particles is found to be 340 [plus or minus] 40 gr/[square centimeter], and is a value that is consistent with the results obtained in other cloud chamber experiments. About one in twenty interactions by penetrating-shower particles whose momenta are in excess of 1 Bev/c results in a V[...]-particle being produced. About 2 percent of all of the shower particles produced in penetrating-shower particle interactions are V[...]-particles. A measurement which might indicate a high angular momentum in the V[...]-particle is obtained far each V[...]-particle produced in the lead plate. The best examples are recalculated. There is a weak indication that the V[...]-particle has a high angular momentum.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:(Physics and Mathematics)
Degree Grantor:California Institute of Technology
Division:Physics, Mathematics and Astronomy
Major Option:Physics
Minor Option:Mathematics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Leighton, Robert B.
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1953
Record Number:CaltechETD:etd-05092003-162924
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:1698
Deposited By: Imported from ETD-db
Deposited On:13 May 2003
Last Modified:26 May 2023 18:40

Thesis Files

PDF (Shelton_fh_1953.pdf) - Final Version
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