SURFACE-CHEMISTRY ON INTER-STELLAR OXIDE GRAINS

被引：7

作者：

DENISON, P

WILLIAMS, DA

机构：

[1] Mathematics Department, UMIST, PO Box 88, Manchester,M60 1QD, United Kingdom

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1981年 / 197卷 / 03期

关键词：

Crystal surfaces - Diatomic molecules - Incident atoms - Interaction energies - Oxide grains - Perfect crystals - Surface vacancies - Vacancy sites - Williams;

D O I：

10.1093/mnras/197.4.835

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Detailed calculations are made to test the predictions of Duley, Millar & Williams (1978) concerning the chemical reactivity of interstellar oxide grains. A method is established for calculating interaction energies between atoms and the perfect crystal with or without surface vacancy sites. The possibility of reactions between incident atoms and absorbed atoms is investigated. We conclude that H2 formation can occur on the perfect crystal surfaces, and that for other diatomic molecules the important formation sites are the Fs- and V22-centres. The outline by Duley, Millar & Williams (1979) of interstellar oxide grain growth and destruction is justified by these calculations. © 1981 Royal Astronomical Society.

引用

页码：835 / 844

页数：10

共 19 条

[1] DESTRUCTION AND GROWTH OF DUST GRAINS IN INTER-STELLAR SPACE .2. DESTRUCTION BY GRAIN SURFACE-REACTIONS, GRAIN-GRAIN COLLISIONS AND PHOTODESORPTION [J].