Properties of ECR plasma in a simple mirror field. II: Spatial structure of the plasma

The spatial structure of an ECR plasma in a simple mirror field was experimentally studied. From axial measurements of the cold plasma parameters it was found that a plasma can be efficiently confined between the two resonance zones in the axial direction, rather than between the mirror throats, whe...

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Bibliographic Details
Published inJapanese Journal of Applied Physics Vol. 26; no. 12; pp. 2079 - 2085
Main Authors ARATA, Y, MIYAKE, S, KISHIMOTO, H
Format Journal Article
LanguageEnglish
Published Tokyo Japanese journal of applied physics 01.12.1987
Subjects
Exact sciences and technology
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
Plasma properties
Plasma
Spatial variation
Microwave discharge
Electric discharge
X ray emission
Electron cyclotron resonance
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Summary:The spatial structure of an ECR plasma in a simple mirror field was experimentally studied. From axial measurements of the cold plasma parameters it was found that a plasma can be efficiently confined between the two resonance zones in the axial direction, rather than between the mirror throats, when the gas pressure is low enough to produce sufficiently hot and/or warm electrons. While measuring the radial distribution of low-energy soft X-ray emissions, it was verified that the 2nd-harmonic, as well as the fundamental, resonance zones contribute remarkably to the production of hot and/or warm electrons.
ISSN:0021-4922
1347-4065
DOI:10.1143/jjap.26.2079