Shukla–Spatschek diffusion effects on surface plasma waves in astrophysical turbulent plasmas

Publications of the Astronomical Society of Japan

Jung, Young-Dae¹  Lee, Myoung-Jae² 

[1] Department of Physics, Applied Physics, and Astronomy, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180–3590, USADepartment of Applied Physics, Hanyang University, Ansan, Kyunggi-Do 15588, South KoreaDepartment of Bionanotechnology, Hanyang University, Ansan, Kyunggi-Do 15588, South Korea;Department of Physics, Hanyang University, Seoul 04763, South KoreaResearch Institute for Natural Sciences, Hanyang University, Seoul 04763, South Korea

关键词: diffusion;    plasmas;    turbulence;    waves;   

DOI  :  10.1093/pasj/psw117

学科分类：天文学(综合)

来源: Oxford University Press

【 摘 要 】

TheeffectsofShukla–Spatschekturbulentdiffusiononatemporalmodeofsurfacewavespropagatingattheinterfaceofanastrophysicalturbulentplasmaareinvestigated.ThedampingratesforhighandlowmodesofsurfacewavearekineticallyderivedbyemployingtheVlasov–Poissonequationandthespecularreflectionboundarycondition.Wefoundthatthediffusioncausedbythefluctuatingelectricfieldsleadstodampingforbothhighandlowmodesofsurfacewaves.Thehigh-modedampingisenhancedwithanincreaseofthewavenumberandthediffusioncoefficient,butsuppressedbyanincreaseofelectronthermalenergy.Bycontrast,thelow-modedampingissuppressedasthewavenumberandthethermalenergyincreasealthoughitisenhancedasthediffusionincreases.ThevariationofthedampingrateduetotheShukla–Spatschekturbulentdiffusionisalsodiscussed.

【 授权许可】

Unknown