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Title: Indirectly heated cathodes and duoplasmatron type electron feeds for positive ion sources

Abstract

Development of indirectly heated cathodes and duoplasmatron type electron feed assemblies is being pursued for use on positive ion sources of neutral beam systems. The cathodes utilize La/sub 2/O/sub 3/ doped molybdenum emission surfaces which supply ionizing electrons for a large rectangular (28 cm. x 60 cm.) magnetic multi-cusp confinement chamber. Single and double electron feed assemblies with different electrode geometries were tested at discharge currents of greater than or equal to 1000 A and pulse lengths of approx. 35 sec. Details of construction and performance results such as plasma uniformity are discussed.

Authors:
;
Publication Date:
Research Org.:
Oak Ridge National Lab., TN (USA)
OSTI Identifier:
5925323
Report Number(s):
CONF-8110118-2(Draft)
ON: DE82002942; TRN: 82-001487
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Conference
Resource Relation:
Conference: 3. neutral beam workshop jointly sponsored by DOE/IAEA/ORNL, Gatlinburg, TN, USA, 19 Oct 1981; Other Information: Handwritten MS
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; DUOPLASMATRONS; CATHODES; ION SOURCES; CATIONS; CUSPED GEOMETRIES; LANTHANUM OXIDES; NEUTRAL BEAM SOURCES; CHALCOGENIDES; CHARGED PARTICLES; ELECTRODES; ELECTRON TUBES; IONS; LANTHANUM COMPOUNDS; MAGNETIC FIELD CONFIGURATIONS; OPEN CONFIGURATIONS; OXIDES; OXYGEN COMPOUNDS; PLASMATRONS; RARE EARTH COMPOUNDS; 700205* - Fusion Power Plant Technology- Fuel, Heating, & Injection Systems

Citation Formats

Schechter, D E, and Tsai, C C. Indirectly heated cathodes and duoplasmatron type electron feeds for positive ion sources. United States: N. p., 1981. Web.
Schechter, D E, & Tsai, C C. Indirectly heated cathodes and duoplasmatron type electron feeds for positive ion sources. United States.
Schechter, D E, and Tsai, C C. Mon . "Indirectly heated cathodes and duoplasmatron type electron feeds for positive ion sources". United States. https://www.osti.gov/servlets/purl/5925323.
@article{osti_5925323,
title = {Indirectly heated cathodes and duoplasmatron type electron feeds for positive ion sources},
author = {Schechter, D E and Tsai, C C},
abstractNote = {Development of indirectly heated cathodes and duoplasmatron type electron feed assemblies is being pursued for use on positive ion sources of neutral beam systems. The cathodes utilize La/sub 2/O/sub 3/ doped molybdenum emission surfaces which supply ionizing electrons for a large rectangular (28 cm. x 60 cm.) magnetic multi-cusp confinement chamber. Single and double electron feed assemblies with different electrode geometries were tested at discharge currents of greater than or equal to 1000 A and pulse lengths of approx. 35 sec. Details of construction and performance results such as plasma uniformity are discussed.},
doi = {},
url = {https://www.osti.gov/biblio/5925323}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {10}
}

Conference:
Other availability
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