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Theory of parametrically-pumped longitudinal-field electron beams

Citation

Forster, Donald Charles (1960) Theory of parametrically-pumped longitudinal-field electron beams. Dissertation (Ph.D.), California Institute of Technology. http://resolver.caltech.edu/CaltechETD:etd-02222006-091619

Abstract

The general equations describing electron beams which have been excited by both a moderately strong pump source (or local oscillator) and a weak signal source are formulated in terms of coupled modes, including coupling to slow-wave circuits, and solved numerically for four problems of interest:

a) space-charge pumped longitudinal parametric amplifiers

b) circuit-pumped longitudinal parametric amplifiers

c) parametric cooling of slow space-charge waves, and

d) traveling-wave tubes with pump space-charge waves excited on the electron stream.

Emphasis is placed on the parametric amplifier solutions, and realization of noise temperatures as low as 55°K are indicated. A discussion of the form of the general equations leads to new concepts about the coupling of positive and negative energy carriers through the action of parametric pumping. Experimental results are presented which tend to verify qualitatively some of the theoretical predictions for the behavior of the parametric amplifiers.

Item Type:Thesis (Dissertation (Ph.D.))
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Electrical Engineering
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Gould, Roy Walter
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1960
Record Number:CaltechETD:etd-02222006-091619
Persistent URL:http://resolver.caltech.edu/CaltechETD:etd-02222006-091619
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:709
Collection:CaltechTHESIS
Deposited By: Imported from ETD-db
Deposited On:02 Mar 2006
Last Modified:26 Dec 2012 02:31

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