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I. A Λᵒ-Fragment Decay in a Cloud Chamber. II. Example of the Associated Production of a Ξ⁻ and Two θᵒ Particles. III. A Study of Multiple V-Events


Sorrels, John David (1956) I. A Λᵒ-Fragment Decay in a Cloud Chamber. II. Example of the Associated Production of a Ξ⁻ and Two θᵒ Particles. III. A Study of Multiple V-Events. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/72KQ-XZ56.


NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. A cloud chamber photograph of the decay in flight of a heavy nuclear fragment is described. The event is most reasonably interpreted as the decay of a [lambda] particle bound to a He3 nucleus, and is similar to examples previously observed in nuclear emulsions. Under this interpretation, the lifetime of the excited fragment in this single example is [...] sec and the binding energy of the [lambda] to He3 is probably less than 2 Mev. In another cloud chamber event, a negative cascade particle and two neutral heavy mesons appear to be produced in a single nuclear interaction above a cloud chamber. It is suggested that this event may be an example of the associated production of [...] particle with two [...] particles according to the scheme of Gell-Mann. All of the 48-inch magnet cloud chamber events where two or more V-particles appear to come from a single origin and decay in a single chamber are described. These V-events are analyzed for origin coplanarity and associated production. In the case of [...] production, a search for angular relationships between decay planes and the plane containing the lines of flight of the two [...] detects no strong correlations. Origin coplanarity tests do not indicate three body decay except in two cases of anomalous [...]. The data is consistent with the assumption of associated production of [...]. The role of the anomalous [...] in multiple production events is discussed.

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 1956
Record Number:CaltechETD:etd-06292004-152135
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:2770
Deposited By: Imported from ETD-db
Deposited On:30 Jun 2004
Last Modified:09 Aug 2023 17:59

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