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Title: Second harmonic ion cyclotron heating of sloshing ions in a straight field line mirror

Abstract

A qualitative analysis of second harmonic heating is carried out, in which a fast magnetosonic wave is launched from a location near the magnetic mirror (where the magnetic field is stronger than the second harmonic resonance field) and directed to the midplane of the open trap. The analysis shows that there is no ''magnetic beach'' heating in contrast to the case with minority heating on the fundamental harmonic. Conversion to the ion Bernstein wave would distort the heating pattern, and the condition for this conversion is estimated. The scenario of second harmonic heavy ion heating is examined numerically. In the scenario chosen, the regime of global resonance overlapping is achieved that provides good heating performance. The computations show that the power deposition is core, the amount of deposited power does not depend sensitively on the parameters of the discharge, and the range of plasma beta at which the heating is efficient is not narrow. The estimated antenna Q is noticeably low and, therefore, the antenna performance is high.

Authors:
;  [1];  [2]
  1. Institute of Plasma Physics, National Science Center, Kharkov Institute of Physics and Technology, 61108 Kharkiv (Ukraine) and Division of Electricity and Lightning Research, A ring ngstroem Laboratory, Uppsala University, Box 534, SE-751 21 Uppsala (Sweden)
  2. (Sweden)
Publication Date:
OSTI Identifier:
20974833
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 14; Journal Issue: 2; Other Information: DOI: 10.1063/1.2435308; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ANTENNAS; BERNSTEIN MODE; CYCLOTRONS; DEPOSITION; HEATING; HEAVY IONS; ION ACOUSTIC WAVES; MAGNETIC FIELDS; MAGNETIC MIRRORS; MAGNETOACOUSTIC WAVES; PERFORMANCE; PLASMA; RESONANCE; RF SYSTEMS

Citation Formats

Moiseenko, V. E., Aagren, O., and Division of Electricity and Lightning Research, Angstroem Laboratory, Uppsala University, Box 534, SE-751 21 Uppsala. Second harmonic ion cyclotron heating of sloshing ions in a straight field line mirror. United States: N. p., 2007. Web. doi:10.1063/1.2435308.
Moiseenko, V. E., Aagren, O., & Division of Electricity and Lightning Research, Angstroem Laboratory, Uppsala University, Box 534, SE-751 21 Uppsala. Second harmonic ion cyclotron heating of sloshing ions in a straight field line mirror. United States. doi:10.1063/1.2435308.
Moiseenko, V. E., Aagren, O., and Division of Electricity and Lightning Research, Angstroem Laboratory, Uppsala University, Box 534, SE-751 21 Uppsala. Thu . "Second harmonic ion cyclotron heating of sloshing ions in a straight field line mirror". United States. doi:10.1063/1.2435308.
@article{osti_20974833,
title = {Second harmonic ion cyclotron heating of sloshing ions in a straight field line mirror},
author = {Moiseenko, V. E. and Aagren, O. and Division of Electricity and Lightning Research, Angstroem Laboratory, Uppsala University, Box 534, SE-751 21 Uppsala},
abstractNote = {A qualitative analysis of second harmonic heating is carried out, in which a fast magnetosonic wave is launched from a location near the magnetic mirror (where the magnetic field is stronger than the second harmonic resonance field) and directed to the midplane of the open trap. The analysis shows that there is no ''magnetic beach'' heating in contrast to the case with minority heating on the fundamental harmonic. Conversion to the ion Bernstein wave would distort the heating pattern, and the condition for this conversion is estimated. The scenario of second harmonic heavy ion heating is examined numerically. In the scenario chosen, the regime of global resonance overlapping is achieved that provides good heating performance. The computations show that the power deposition is core, the amount of deposited power does not depend sensitively on the parameters of the discharge, and the range of plasma beta at which the heating is efficient is not narrow. The estimated antenna Q is noticeably low and, therefore, the antenna performance is high.},
doi = {10.1063/1.2435308},
journal = {Physics of Plasmas},
number = 2,
volume = 14,
place = {United States},
year = {Thu Feb 15 00:00:00 EST 2007},
month = {Thu Feb 15 00:00:00 EST 2007}
}
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