ULTRAVIOLET PHOTODESORPTION FROM WATER ICE

被引：114

作者：

WESTLEY, MS

BARAGIOLA, RA

JOHNSON, RE

BARATTA, GA

机构：

[1] UNIV VIRGINIA,SPACE RES LAB,CHARLOTTESVILLE,VA 22901

[2] OSSERV ASTROFIS CATANIA,I-95125 CATANIA,ITALY

来源：

PLANETARY AND SPACE SCIENCE | 1995年 / 43卷 / 10-11期

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

D O I：

10.1016/0032-0633(95)00088-M

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The absolute desorption yield of low temperature (35-100 K) water ice under irradiation with Lyman-alpha (121.6 nm) photons, and its dependence on ice temperature and irradiation dose are measured. It is found that photodesorption can account for the absence of ice on grains in diffuse interstellar clouds, is an important factor determining the life of ice mantles in molecular clouds, and exceeds solar wind ion erosion and sublimation of ice grains in the outer solar system.

引用

页码：1311 / 1315

页数：5

共 15 条

[1] FAST ION-BOMBARDMENT OF ICES AND ITS ASTROPHYSICAL IMPLICATIONS [J].