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Title: Auxiliary discharge in a thermionic converter

Abstract

The voltage drop in the low-voltage arc of a cesium thermionic converter is about 0.5 V under optimum conditions. Experiments show that it is possible to reduce this drop by means of an auxiliary inert-gas discharge. The optimum parameters of the auxiliary emitter and of the auxiliary discharge is very sensitive to the electrode work function. The required emitter work function can be achieved by adding barium vapor at a low pressure so that the barium does not affect the discharge parameters. A simple physical model leads to a good qualitative agreement with experiment. There is a fundamental limit on the parameters of a converter with an auxiliary discharge.

Authors:
; ;
Publication Date:
OSTI Identifier:
6668934
Resource Type:
Journal Article
Journal Name:
Sov. Phys. - Tech. Phys. (Engl. Transl.); (United States)
Additional Journal Information:
Journal Volume: 23:1
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; THERMIONIC CONVERTERS; EFFICIENCY; ELECTRIC DISCHARGES; VOLTAGE DROP; CESIUM; ELECTRODES; THERMIONIC EMITTERS; WORK FUNCTIONS; ALKALI METALS; DIRECT ENERGY CONVERTERS; ELEMENTS; METALS; NESDPS Office of Nuclear Energy Space and Defense Power Systems; 300403* - Thermionic Converters- Materials, Components, & Auxiliaries

Citation Formats

Kaibyshev, V Z, Karetnikov, D V, and Trutnev, A L. Auxiliary discharge in a thermionic converter. United States: N. p., 1978. Web.
Kaibyshev, V Z, Karetnikov, D V, & Trutnev, A L. Auxiliary discharge in a thermionic converter. United States.
Kaibyshev, V Z, Karetnikov, D V, and Trutnev, A L. 1978. "Auxiliary discharge in a thermionic converter". United States.
@article{osti_6668934,
title = {Auxiliary discharge in a thermionic converter},
author = {Kaibyshev, V Z and Karetnikov, D V and Trutnev, A L},
abstractNote = {The voltage drop in the low-voltage arc of a cesium thermionic converter is about 0.5 V under optimum conditions. Experiments show that it is possible to reduce this drop by means of an auxiliary inert-gas discharge. The optimum parameters of the auxiliary emitter and of the auxiliary discharge is very sensitive to the electrode work function. The required emitter work function can be achieved by adding barium vapor at a low pressure so that the barium does not affect the discharge parameters. A simple physical model leads to a good qualitative agreement with experiment. There is a fundamental limit on the parameters of a converter with an auxiliary discharge.},
doi = {},
url = {https://www.osti.gov/biblio/6668934}, journal = {Sov. Phys. - Tech. Phys. (Engl. Transl.); (United States)},
number = ,
volume = 23:1,
place = {United States},
year = {1978},
month = {1}
}