University of Illinois Urbana-Champaign

Investigation of the giant resonance region of 1̳2̳C with (e,e'[gamma])

Ammons, Edsel Albert

This item is only available for download by members of the University of Illinois community. Students, faculty, and staff at the U of I may log in with your NetID and password to view the item. If you are trying to access an Illinois-restricted dissertation or thesis, you can request a copy through your library's Inter-Library Loan office or purchase a copy directly from ProQuest.

Permalink

https://hdl.handle.net/2142/18909

Description

Title
Investigation of the giant resonance region of 1̳2̳C with (e,e'[gamma])
Author(s)
Ammons, Edsel Albert
Issue Date
1992
Doctoral Committee Chair(s)
Papanicolas, Costas N.
Department of Study
Physics
Discipline
Physics
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
  • giant resonance
  • quantum electrodynamics
  • leptonic probe
Language
en
Abstract
We report here on progress toward utilization of the ( e, e'1) reaction for the study of giant resonances. The reaction mechanism of this purely leptonic probe is known since it is governed by quantum electrodynamics. Because the long wavelength approximation is applicable, for the emitted photon, the ( e, e'1) reaction is highly selective of the multi polarity of the giant resonance response. However, the small photon-emission probability of the giant resonances, their broad nature, and competition from bremsstrahlung photons, have suggested that use of the ( e, e'1) reaction in the study of the giant resonances would be very difficult. In a series of experiments at the Nuclear Physics Laboratory of the University of Illinois, utilizing a 100 MeV electron beam provided by the MUSL-2 microtron, measurements on 12C have demonstrated the feasibility of the (e,e'1) probe of the giant resonance region. Measurements were taken at momentum transfers of .32 fm-1 and .46 fm-1 for excitation energies covering the 13 to 30 MeV region. By forming missing energy spectra, cross sections, both differential and integrated over the giant resonance region, were obtained for (e, e'1) in which the nucleus exits in the ground state or in one of the first two excited states at 4.44 MeV and 7.65 MeV.
Type of Resource
text
Permalink
http://hdl.handle.net/2142/18909
Copyright and License Information
1992 Edsel Albert Ammons

Owning Collections

Dissertations and Theses - Physics
Dissertations in Physics
Graduate Dissertations and Theses at Illinois PRIMARY
Graduate Theses and Dissertations at Illinois