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Electrostatic drift modes in quantum dusty plasmas with Jeans terms

Phys. Plasmas 16, 103705 (2009); doi:10.1063/1.3257170

Published 30 October 2009

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Haijun Ren,1,2 Zhengwei Wu,1,2,3 Jintao Cao,1 and Paul K. Chu2
1CAS Key Laboratory of Basic Plasma Physics, University of Science and Technology of China, Hefei 230026, People's Republic of China
2Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong
3The School of Physics, The University of Sydney, New South Wales 2006, Australia
Electrostatic drift waves (EDWs) are investigated in nonuniform quantum magnetized dusty plasmas by taking into account dust gravitational effects with the help of the quantum hydrodynamic model. Ions and electrons are viewed as low-temperature Fermi gases, whereas quantum effects are neglected for the dust grains. The analytical dispersion relationship of the quantum EDWs is derived. Quantum effects are shown to affect the dispersion of EDW significantly. The Jeans terms induce a driftlike instability, which does not exist with the absence of gravitational effects. The criteria and growth rate of the kind of instability are presented. Our results are relevant to dense astrophysical objects such as the interiors of astrophysical compact objects (e.g., white dwarfs and neutron stars). ©2009 American Institute of Physics
History: Received 7 July 2009; accepted 9 October 2009; published 30 October 2009
Permalink: http://link.aip.org/link/?PHPAEN/16/103705/1
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1070-664X (print)   1089-7674 (online)
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