Simulation of ion acceleration in a charged dust cloud

Details Simulation of ion acceleration in a charged dust cloud Simulation of ion acceleration in a charged dust cloud

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992georl..19..225m&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 19, Feb. 7, 1992, p. 225-228.

Physics

13

Computerized Simulation, Particle Acceleration, Plasma Dynamics, Plasma Interactions, Solar Wind, Cosmic Dust, Plasma Clouds

Scientific paper

A 1D hybrid simulation model is used to investigate the interaction of a plasma flow with a cloud of charged dust particles. Depending on the dust charge density and the cloud diameter, this cloud is either a weak or a strong obstacle in the plasma flow. For a weak dust obstacle a super-magnetosonic flow is decelerated monotonically inside the cloud whereas a submagnetosonic flow is accelerated. For a strong dust obstacle the flow configuration in the cloud changes dramatically. Deceleration and acceleration may change across the cloud and strong proton heating and shock generation may occur with the stationary regime being discarded. An interpretation of the proton dynamics in weak clouds is given on the basis of a simple analytic multifluid model.

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