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Title: Experiments with enhanced mode thermionic converters. [With auxiliary electrode]

Abstract

Reduction of the ionization and scattering losses associated with ignited mode cesium diodes is essential for high thermal-to-electrical conversion efficiency. Use of an auxiliary electrode in conjuction with a noble gas in the interelectrode space should permit more efficient ion generation for space charge neutralization. The characteristics of a thermionic triode utilizing a ring electrode and a dispenser cathode emitter have been studied as a function of xenon pressure, cesium reservoir temperature, spacing, electrode temperature and pulse parameters (i.e., potential, duration, and repetition rate) applied to the auxiliary electrode. Pulsed operation significantly enhanced output power with uniform discharges appearing to be sustained at emitter--collector spacings as low as 0.5 mm.

Authors:
;
Publication Date:
Research Org.:
Thermo Electron Research and Development Center, Waltham, MA
OSTI Identifier:
6397892
Resource Type:
Journal Article
Journal Name:
IEEE Trans. Plasma Sci.; (United States)
Additional Journal Information:
Journal Volume: PS-6:1; Journal Issue: 1
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; THERMIONIC CONVERTERS; PERFORMANCE; CESIUM; CONFIGURATION; EFFICIENCY; ELECTRIC DISCHARGES; ELECTRIC POTENTIAL; ELECTRODES; IONIZATION; PULSES; SCATTERING; SPACE CHARGE; TEMPERATURE DEPENDENCE; THERMIONIC COLLECTORS; THERMIONIC EMITTERS; XENON; ALKALI METALS; DIRECT ENERGY CONVERTERS; ELEMENTS; METALS; NONMETALS; RARE GASES; NESDPS Office of Nuclear Energy Space and Defense Power Systems; 300402* - Thermionic Converters- Performance & Testing

Citation Formats

Oettinger, P E, and Hussman, F N. Experiments with enhanced mode thermionic converters. [With auxiliary electrode]. United States: N. p., 1978. Web. doi:10.1109/TPS.1978.4317090.
Oettinger, P E, & Hussman, F N. Experiments with enhanced mode thermionic converters. [With auxiliary electrode]. United States. https://doi.org/10.1109/TPS.1978.4317090
Oettinger, P E, and Hussman, F N. 1978. "Experiments with enhanced mode thermionic converters. [With auxiliary electrode]". United States. https://doi.org/10.1109/TPS.1978.4317090.
@article{osti_6397892,
title = {Experiments with enhanced mode thermionic converters. [With auxiliary electrode]},
author = {Oettinger, P E and Hussman, F N},
abstractNote = {Reduction of the ionization and scattering losses associated with ignited mode cesium diodes is essential for high thermal-to-electrical conversion efficiency. Use of an auxiliary electrode in conjuction with a noble gas in the interelectrode space should permit more efficient ion generation for space charge neutralization. The characteristics of a thermionic triode utilizing a ring electrode and a dispenser cathode emitter have been studied as a function of xenon pressure, cesium reservoir temperature, spacing, electrode temperature and pulse parameters (i.e., potential, duration, and repetition rate) applied to the auxiliary electrode. Pulsed operation significantly enhanced output power with uniform discharges appearing to be sustained at emitter--collector spacings as low as 0.5 mm.},
doi = {10.1109/TPS.1978.4317090},
url = {https://www.osti.gov/biblio/6397892}, journal = {IEEE Trans. Plasma Sci.; (United States)},
number = 1,
volume = PS-6:1,
place = {United States},
year = {1978},
month = {3}
}