Landau damping in space plasmas with generalized (r,q) distribution function

Journal Article · Thu Dec 15 04:00:00 EST 2005 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2139504· OSTI ID:20782401

Qureshi, M N.S.; Shi, J K; Ma, S Z ^[1]

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1. Key Laboratory of Space Weather, CSSAR, Chinese Academy of Sciences, Beijing 100080 (China) Department of Physics, Government College University, Lahore 54000 (Pakistan) and Graduate University of Chinese Academy of Sciences, Beijing 100039 (China)

Space plasmas possessing non-Maxwellian particle distribution functions with an enhanced high-energy tail and shoulder in the profile of distribution function take an important role to the wave particle interaction. In the present paper Landau damping of electron plasma (Langmuir) waves and ion-acoustic waves in a hot, isotropic, unmagnetized plasma is studied with the generalized (r,q) distribution function. The results show that for the Langmuir oscillations Landau damping becomes severe as the spectral index r or q reduces. However, for the ion-acoustic waves Landau damping is more sensitive to the ion temperature than the spectral indices.

• OSTI ID: 20782401
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 12 Vol. 12; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DISTRIBUTION FUNCTIONS
ELECTRON TEMPERATURE
ELECTRONS
INDEXES
ION ACOUSTIC WAVES
ION TEMPERATURE
LANDAU DAMPING
PARTICLE INTERACTIONS
PLASMA
SPACE