Slow Wave Excitation in the ICRF and HHFW Regimes

Journal Article · Fri Dec 23 00:00:00 EST 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3664988· OSTI ID:21612499

Phillips, C K; Valeo, E J; Hosea, J C; LeBlanc, B P; Wilson, J R ^[1]; Jaeger, E F ^[2]; Berry, L A; Ryan, P M ^[3]; Bonoli, P T; Wright, J C ^[4]; Smithe, D N ^[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)

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.

• OSTI ID: 21612499
• Journal Information: AIP Conference Proceedings, Vol. 1406, 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); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

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