SIMULATION OF ION-ACCELERATION IN A CHARGED DUST CLOUD

被引：15

作者：

MOTSCHMANN, U ^{[1
]}

SAUER, K ^{[1
]}

ROATSCH, T ^{[1
]}

机构：

[1] INST KOSMOSFORSCH,BERLIN,GERMANY

来源：

GEOPHYSICAL RESEARCH LETTERS | 1992年 / 19卷 / 03期

关键词：

D O I：

10.1029/91GL03166

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The interaction of a plasma flow with a cloud of charged dust particles is studied using a one-dimensional hybrid simulation model. 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 sub-magnetosonic 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.

引用

页码：225 / 228

页数：4

共 13 条

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