Efficiency of molecular hydrogen formation on silicates

被引：161
|
作者：
Pirronello, V
Biham, O
Liu, C
Shen, LO
Vidali, G
机构：
[1] SYRACUSE UNIV, SOLID STATE SCI & TECHNOL PROGRAM, SYRACUSE, NY 13244 USA
[2] SYRACUSE UNIV, DEPT PHYS, SYRACUSE, NY 13244 USA
[3] CATANIA UNIV, IST FIS, CATANIA, SICILY, ITALY
[4] HEBREW UNIV JERUSALEM, RACAH INST PHYS, IL-91904 JERUSALEM, ISRAEL
来源：
ASTROPHYSICAL JOURNAL | 1997年 / 483卷 / 02期
关键词：
dust; extinction; ISM; abundances; molecules; molecular processes;
D O I：
10.1086/310746
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We report on laboratory measurements of molecular hydrogen formation and recombination on an olivine slab as a function of surface temperature under conditions relevant to those encountered in the interstellar medium. On the basis of our experimental evidence, we recognize that there are two main regimes of H coverage that are of astrophysical importance; for each of them we provide an expression giving the production rate of molecular hydrogen in interstellar clouds.
引用
收藏
页码：L131 / L134
页数：4
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