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The Scattering of Slow Electrons in Gases

Citation

Skinner, Selby Millmore (1933) The Scattering of Slow Electrons in Gases. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/16yh-4903. https://resolver.caltech.edu/CaltechTHESIS:12162024-194258856

Abstract

The earliest attempts to investigate the nature of the atom using an electron stream directed into a gas as the investigating tool were the experiments of Lenard (1), who determined the total cross section offered to an electron by the gas through which it was directed. Using fast cathode rays, and photo-electrons, he covered the high velocity electron range. The results obtained, indicated that the molecular cross section decreased monotonically with increasing electron velocity. Later work of Lenard and others (2) showed that the molecular cross section for fast elections was proportional to the sum of the atomic numbers of the atoms in the molecule. During the same period, the experiments of Bragg and Moseley were laying the foundation for the modern view of the constitution of the atom. The conception developed slowly, culminating in the model advanced by Bohr (3), a very useful and reasonably accurate picture, which has been merely slightly modified conceptually by the newer quantum mechanics.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:(Physics)
Degree Grantor:California Institute of Technology
Division:Physics, Mathematics and Astronomy
Major Option:Physics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Millikan, Robert Andrews
Thesis Committee:
  • Unknown, Unknown
Defense Date:1933
Record Number:CaltechTHESIS:12162024-194258856
Persistent URL:https://resolver.caltech.edu/CaltechTHESIS:12162024-194258856
DOI:10.7907/16yh-4903
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:16931
Collection:CaltechTHESIS
Deposited By: Ben Maggio
Deposited On:16 Dec 2024 23:34
Last Modified:16 Dec 2024 23:48

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