100 eV electron temperatures in the Maryland centrifugal experiment observed using electron Bernstein emission

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https://pubs.aip.org/aip/pop/article-abstract/21/6/063305/212598/100-eV-electron-temperatures-in-the-Maryland

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https://doi.org/10.1063/1.4883499
 http://hdl.handle.net/11603/31404

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UMBC Mechanical Engineering Department
UMBC Faculty Collection

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https://orcid.org/0000-0002-6830-3126

Date

2014-06-16

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journal articles
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Citation of Original Publication

R. R. Reid, C. A. Romero-Talamás, W. C. Young, R. F. Ellis, A. B. Hassam; 100 eV electron temperatures in the Maryland centrifugal experiment observed using electron Bernstein emission. Phys. Plasmas 1 June 2014; 21 (6): 063305. https://doi.org/10.1063/1.4883499

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This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
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Abstract

Thermal electron Bernstein emission has been observed at the second harmonic of the electron cyclotron frequency at the mid-plane of the Maryland Centrifugal eXperiment. The emission is received in the X-mode polarization and coupled to the Bernstein wave by the B-X mode conversion process. The average B-X coupling efficiency is approximately 20%. The observed emission indicates thermal electron temperatures an excess of 100 eV in the core of the rotating plasma. The measured electron temperature is consistent with recent ion temperature measurements and indicates that the total energy confinement time exceeds 500 μs.