Turbulence Scattering of High Harmonic Fast Waves

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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 ... continued below

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209 Kilobytes pages

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Ono, M.; Hosea, J.; LeBlanc, B.; Menard, J.; Phillips, C.K.; Wilson, R. et al. May 31, 2001.

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Description

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).

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209 Kilobytes pages

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INIS; OSTI as DE00786532

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  • Other Information: PBD: 31 May 2001

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  • Report No.: PPPL-3571
  • Grant Number: AC02-76CH03073
  • DOI: 10.2172/786532 | External Link
  • Office of Scientific & Technical Information Report Number: 786532
  • Archival Resource Key: ark:/67531/metadc718894

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  • May 31, 2001

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  • Sept. 29, 2015, 5:31 a.m.

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  • April 18, 2016, 1:10 p.m.

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Ono, M.; Hosea, J.; LeBlanc, B.; Menard, J.; Phillips, C.K.; Wilson, R. et al. Turbulence Scattering of High Harmonic Fast Waves, report, May 31, 2001; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc718894/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.