Date of Award

5-1-1969

Document Type

Thesis

Degree Name

Master of Science (M.S.) in Physics

Department

Physics

Physical Description

1 online resource (vi, 50 leaves)

Subjects

Electron beams, Electrons -- Scattering, Electron optics

DOI

10.15760/etd.908

Abstract

The energy distribution in an electron beam transmitted by a thin aluminum film was studied by a retarding potential method in which the energy analysis could be made as a function of the polar angle and azimuth of scattering. The results indicated that the transmitted beam contained electrons which had lost essentially zero energy and groups of electrons which had suffered losses of approximately15 ev and 25 ev and possib1y 75 ev. In addition there appeared to be a continuous background of energy losses over the range studied (from 0 to 80 ev). The resolution of the energy analyser was limited by the separation of the data points and was not adequate to observe the dependence of the 15 ev energy loss (plasma loss) on the polar angle of scattering. This study demonstrated the feasibility of this method of energy analysis as well as the short-comings of the apparatus. Suggestions for future improvements are made.

Description

Portland State University. Dept. of Physics

Persistent Identifier

http://archives.pdx.edu/ds/psu/8798

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