CHEMICAL SPUTTERING COULD PRODUCE SODIUM VAPOR AND ICE ON MERCURY

被引：63

作者：

POTTER, AE

机构：

[1] NASA Johnson Space Center, Houston, Texas

来源：

GEOPHYSICAL RESEARCH LETTERS | 1995年 / 22卷 / 23期

关键词：

D O I：

10.1029/95GL03181

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

It is suggested that chemical sputtering of surface rocks by protons from the Mercury magnetosphere can yield sodium vapor more efficiently than physical sputtering, thus lowering the required sodium concentration in surface rocks. Chemical sputtering can also yield sodium vapor having a relatively low kinetic temperature, in agreement with observation. Water vapor is produced in addition to sodium vapor. It could be produced in sufficient amounts to explain the observation of ice in Mercury polar craters.

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页码：3289 / 3292

页数：4

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