Observation of multiple current free helicon double layers

A combination of three strong current free double layers (CFDLs) characterized by strength (eΔΦ/Te) ∼ 10 and widths (Δz/λD) ∼ 7.6, 8, and 8.3 has been observed in argon helicon plasma. In contrast to other works report on the same subject, in the present investigations the DLs form in a mirror-like...

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Bibliographic Details
Published inApplied physics letters Vol. 103; no. 18
Main Authors Sahu, B. B., Ganguli, A., Tarey, R. D.
Format Journal Article
LanguageEnglish
Published Melville American Institute of Physics 28.10.2013
Subjects
Applied physics
Diagnostic systems
Magnetic fields
Magnetism
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ISSN0003-6951
1077-3118
DOI10.1063/1.4828559

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Summary:A combination of three strong current free double layers (CFDLs) characterized by strength (eΔΦ/Te) ∼ 10 and widths (Δz/λD) ∼ 7.6, 8, and 8.3 has been observed in argon helicon plasma. In contrast to other works report on the same subject, in the present investigations the DLs form in a mirror-like magnetic field topology and present in the plateau regions of magnetic field. Using the measurement of radio frequency compensated Langmuir Probe consistent with the B-dot probe diagnostic, a qualitative mechanism of DL formation has also been discussed.
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ISSN:0003-6951
1077-3118
DOI:10.1063/1.4828559