University of Illinois Urbana-Champaign

Photomeson production from neutrons bound in helium and deuterium

Walker, Arthur Bertram Cuthbert

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Description

Title
Photomeson production from neutrons bound in helium and deuterium
Author(s)
Walker, Arthur Bertram Cuthbert
Issue Date
1962
Doctoral Committee Chair(s)
Smith, J.H.
Department of Study
Physics
Discipline
Physics
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Photomeson production
Language
en
Abstract
Photomeson production from neutrons bound in helium and deuterium was investigated by simultaneously measuring the angle and energy of the meson and the recoil proton. 270 Mev bremsstrahlung was used and Q in this experiment, only pions at 75° in the laboratory were measured. This corresponds roughly to 90° in the center of mass system of the photon and struck neutron. The angular distributions were interpreted to give the internal nuclear momentum distribution of the parent neutron by comparing the experimental data with a calculation based on the impulse approximation. The deuterium data agree both in shape and in absolute magnitude with predictions based on the Hulthen wave function. The helium data indicate that the neutrons involved in photomeson production have fewer high momentum components in their wavefunctions than those found from other types of experiments. This result is interpreted as evidence for the reabsorption of mesons by the parent nucleon and another nucleon interacting strongly with it, to produce pseudodeuteron photodisintegrations. These strong two body interactions are believed responsible for the high momentum components of the internal nuclear momentum distribution.
Type of Resource
text
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http://hdl.handle.net/2142/16659
Copyright and License Information
© 1962 Arthur Bertram Cuthbert Walker

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Dissertations and Theses - Physics PRIMARY
Dissertations in Physics