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

页码：L131 / L134

页数：4

共 22 条

[1] MOLECULAR FRACTAL SURFACES [J].