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摘要
Dust heating in dusty plasmas due to thermal electric field fluctuations and dust acoustic waves is examined. It is shown that dust particles acquire large random motion in fluctuating electric fields (within dust cloud) of background plasma causing dust electrostatic pressure P(E) [K. Avinash, Phys. Plasmas 13 (2006) 012109] and corresponding large temperature T(E). Due to quadratic dependence on q(d) and high dust charge (similar to 10(3)-10(e)(4)), T(E) is much bigger than the dust kinetic temperature T(d) and is in the range of 10-300 eV for typical experimental numbers. Using global energy constraints dust heating due to dust acoustic waves is examined. It is shown that dust acoustic waves are potentially capable of heating dust to high temperatures in the range of a few hundreds of eV.
- 出版日期2011-7-18
