Turbulence Scattering of High Harmonic Fast Waves

Technical Report · Thu May 31 00:00:00 EDT 2001

DOI:https://doi.org/10.2172/786532· OSTI ID:786532

Ono, M; Hosea, J; LeBlanc, B; Menard, J; Phillips, C K; Wilson, R; Ryan, P; Swain, D; Wilgen, J; Kubota, S; Mau, and T.K.

Effect of scattering of high-harmonic fast-magnetosonic waves (HHFW) by low-frequency plasma turbulence is investigated. Due to the similarity of the wavelength of HHFW to that of the expected low-frequency turbulence in the plasma edge region, the scattering of HHFW can become significant under some conditions. The scattering probability increases with the launched wave parallel-phase-velocity as the location of the wave cut-off layer shifts toward the lower density edge. The scattering probability can be reduced significantly with higher edge plasma temperature, steeper edge density gradient, and magnetic field. The theoretical model could explain some of the HHFW heating observations on the National Spherical Torus Experiment (NSTX).

• Research Organization: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 786532
• Report Number(s): PPPL-3571; TRN: US0108926
• Resource Relation: Other Information: PBD: 31 May 2001
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
HARMONICS
MAGNETIC FIELDS
PLASMA WAVES
PROBABILITY
SCATTERING
TURBULENCE
WAVELENGTHS
MAGNETOACOUSTIC WAVES
NSTX DEVICE