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Title: Slow Wave Excitation in the ICRF and HHFW Regimes

Abstract

Theoretical considerations and high spatial resolution numerical simulations of radio frequency (rf) wave heating in tokamaks and in spherical toruses (ST) indicate that fast waves launched into tokamaks in the ion cyclotron range of frequencies (ICRF) or into spherical toruses in the high harmonic fast wave (HHFW) regime may excite a short wavelength slow mode inside of the plasma discharge due to the presence of hot electrons that satisfy the condition {omega}<k{sub ||}v{sub te}, where {omega} is the launched wave frequency, k{sub ||} is the local parallel component of the wave vector, and v{sub te} is the local electron thermal speed. This excited slow wave may be related to the electrostatic ion cyclotron wave that propagates for frequencies above the fundamental ion cyclotron frequency in warm plasmas or to a high frequency version of a kinetic Alfven wave. This slow wave, if physically real, would provide another path for rf power absorption in tokamaks and ST devices.

Authors:
; ; ; ;  [1];  [2]; ;  [3]; ;  [4];  [5]
  1. Princeton Plasma Physics Laboratory, Princeton University, Princeton, NJ 08543 (United States)
  2. XCEL Engineering, 1066 Commerce Park Dr., Oak Ridge, TN 37830 (United States)
  3. Oak Ridge National Laboratory, Oak Ridge, TN 37831 (United States)
  4. MIT Plasma Science and Fusion Center, Cambridge, MA 02139 (United States)
  5. Tech-X Corporation, 5621 Arapahoe Ave., Suite A, Boulder, CO 80303 (United States)
Publication Date:
OSTI Identifier:
21612499
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1406; Journal Issue: 1; Conference: 9. topical conference on radio frequency power in plasmas, Newport (United States), 1-3 Jun 2011; Other Information: DOI: 10.1063/1.3664988; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ABSORPTION; ALFVEN WAVES; COMPUTERIZED SIMULATION; ELECTRONS; EXCITATION; ICR HEATING; ION CYCLOTRON-RESONANCE; ION PLASMA WAVES; IONS; NUMERICAL ANALYSIS; PLASMA; PLASMA SIMULATION; RADIOWAVE RADIATION; SPHERICAL CONFIGURATION; TOKAMAK DEVICES; CHARGED PARTICLES; CLOSED PLASMA DEVICES; CONFIGURATION; CYCLOTRON RESONANCE; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; ENERGY-LEVEL TRANSITIONS; FERMIONS; HEATING; HIGH-FREQUENCY HEATING; HYDROMAGNETIC WAVES; ION WAVES; LEPTONS; MATHEMATICS; PLASMA HEATING; PLASMA WAVES; RADIATIONS; RESONANCE; SIMULATION; SORPTION; THERMONUCLEAR DEVICES

Citation Formats

Phillips, C K, Valeo, E J, Hosea, J C, LeBlanc, B P, Wilson, J R, Jaeger, E F, Berry, L A, Ryan, P M, Bonoli, P T, Wright, J C, and Smithe, D N. Slow Wave Excitation in the ICRF and HHFW Regimes. United States: N. p., 2011. Web. doi:10.1063/1.3664988.
Phillips, C K, Valeo, E J, Hosea, J C, LeBlanc, B P, Wilson, J R, Jaeger, E F, Berry, L A, Ryan, P M, Bonoli, P T, Wright, J C, & Smithe, D N. Slow Wave Excitation in the ICRF and HHFW Regimes. United States. https://doi.org/10.1063/1.3664988
Phillips, C K, Valeo, E J, Hosea, J C, LeBlanc, B P, Wilson, J R, Jaeger, E F, Berry, L A, Ryan, P M, Bonoli, P T, Wright, J C, and Smithe, D N. 2011. "Slow Wave Excitation in the ICRF and HHFW Regimes". United States. https://doi.org/10.1063/1.3664988.
@article{osti_21612499,
title = {Slow Wave Excitation in the ICRF and HHFW Regimes},
author = {Phillips, C K and Valeo, E J and Hosea, J C and LeBlanc, B P and Wilson, J R and Jaeger, E F and Berry, L A and Ryan, P M and Bonoli, P T and Wright, J C and Smithe, D N},
abstractNote = {Theoretical considerations and high spatial resolution numerical simulations of radio frequency (rf) wave heating in tokamaks and in spherical toruses (ST) indicate that fast waves launched into tokamaks in the ion cyclotron range of frequencies (ICRF) or into spherical toruses in the high harmonic fast wave (HHFW) regime may excite a short wavelength slow mode inside of the plasma discharge due to the presence of hot electrons that satisfy the condition {omega}<k{sub ||}v{sub te}, where {omega} is the launched wave frequency, k{sub ||} is the local parallel component of the wave vector, and v{sub te} is the local electron thermal speed. This excited slow wave may be related to the electrostatic ion cyclotron wave that propagates for frequencies above the fundamental ion cyclotron frequency in warm plasmas or to a high frequency version of a kinetic Alfven wave. This slow wave, if physically real, would provide another path for rf power absorption in tokamaks and ST devices.},
doi = {10.1063/1.3664988},
url = {https://www.osti.gov/biblio/21612499}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1406,
place = {United States},
year = {Fri Dec 23 00:00:00 EST 2011},
month = {Fri Dec 23 00:00:00 EST 2011}
}