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The Effects of Atomic Electrons on Nuclear Radiation


Karzas, William James (1955) The Effects of Atomic Electrons on Nuclear Radiation. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/P9P1-C330.


NOTE:Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. The effects of the atomic electrons on nuclear gamma emission are considered. It is found that the electrons, excited by the nuclear electrostatic field, can emit gamma rays coherently with the nucleus and thus add to the observed intensity of radiation. The correction is computed for K electrons, for electric dipole and quadrupole radiation, and is found to be small, of the order of a few per cent, for energies equal to the K binding energy. It drops rapidly with increasing energy, varying inversely as the square of the gamma ray energy. The Z-dependence of the effect is essentially Z[superscript negative 1]. For gamma ray energies corresponding to electron transitions between bound levels large resonances may occur, but they are of narrow width and their observation would be fortuitous.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:(Physics and Mathematics) ; nuclear radiation
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):
  • Christy, Robert F. (advisor)
  • Feynman, Richard Phillips (advisor)
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1955
Additional Information:Title varies in the 1955 Caltech commencement program: Gamma Rays and Nuclear Reactions Induced by Charged Particles
Record Number:CaltechETD:etd-01072004-095620
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:45
Deposited By: Imported from ETD-db
Deposited On:08 Jan 2004
Last Modified:29 Jun 2023 22:30

Thesis Files

PDF (Karzas_wj_1955.pdf) - Final Version
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