Low Frequency Electrostatic Instabilities in a Two-Dust Component Plasma | Zendy

S. K. Maharaj | Zendy; R. Bharuthram | Zendy

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Low Frequency Electrostatic Instabilities in a Two-Dust Component Plasma

Author(s) -

S. K. Maharaj,

R. Bharuthram

Publication year - 2001

Publication title -

physica scripta

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.415

H-Index - 83

eISSN - 1402-4896

pISSN - 0031-8949

DOI - 10.1238/physica.regular.063a00491

Subject(s) - plasma , dusty plasma , dispersion relation , physics , ion , instability , atomic physics , electron , magnetic field , dispersion (optics) , two stream instability , particle (ecology) , plasma parameters , electric field , mechanics , condensed matter physics , optics , nuclear physics , oceanography , quantum mechanics , geology

The kinetic dispersion relation for a four-component magnetized dusty plasma comprising of ions, electrons and two negatively charged dust components (of different mass and charge) is solved for low-frequency electrostatic instabilities in the dust plasma frequency regime. The free energy that drives the instability is provided by a drift of the ions in the direction of an externally applied magnetic field. The effect of the variation of plasma parameters such as ion drift speed, particle densities, ion and dust temperature and magnetic field strength on the real frequency and the growth rate of the instability is examined. Numerical solutions of the full dispersion relation are compared with approximate analytical expressions.

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