STICKING PROBABILITY OF H AND D ATOMS ON AMORPHOUS ICE - A COMPUTATIONAL STUDY

被引：88

作者：

BUCH, V

ZHANG, Q

机构：

[1] Chemistry, M/C 111, University of Illinois at Chicago, Box 4348, Chicago

来源：

ASTROPHYSICAL JOURNAL | 1991年 / 379卷 / 02期

关键词：

INTERSTELLAR GRAINS;

D O I：

10.1086/170537

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Sticking of H and D atoms on amorphous ice was studied computationally, using the molecular dynamics simulation technique. A simple formula S(T) = [(k(B) T/E0) + 1]-2 was obtained for the sticking probability at T(gas) less-than-or-similar-to 300 K, with E0 = 200 K for the D atom, E0 = 102 K for the H atom. The formula is suggested as a reasonable estimate for sticking on dust grains in general-if most grains are covered by at least a few layers of weakly bonded disordered molecular material.

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页码：647 / 652

页数：6

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