Kinetics of polar mesospheric plasma layers: Comparison of theoretical results with observations

Sodha, M. S.; Misra, Shikha; Mishra, S. K.; Dixit, Amrit
August 2011
Physics of Plasmas;Aug2011, Vol. 18 Issue 8, p083708
Academic Journal
This paper presents an analytical model for the physical understanding of the charge distribution on ice dust particles in plasma layers of polar mesospheric clouds PMCs (Noctilucent clouds and polar mesospheric summer echoes). For the case of pure ice dust (with high work function), the charging of the particles occurs only because of the accretion of electronic and ionic species on the surface of ice grains. The analysis is based on the number and energy balance of constituents and allows the charge to be only an integral multiple (positive or negative) of the electronic charge. Amongst other interesting results, the theory explains the observed charge distribution on pure ice particles and corresponding reduction of electron density (viz., Bite out) in the PMCs.


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