Surface Adsorption of Light Gas Atoms
Surface Adsorption of Light Gas Atoms
复制标题
轻气体原子的表面吸附
DOI：
10.1063/1.1673836
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发表时间：
1970
影响因子：
4.4
通讯作者：
E. Salpeter
中科院分区：
文献类型：
--
作者：
D. Hollenbach;E. Salpeter
本文重新考虑了极轻气体原子在固体表面的吸附。构造了吸附原子的量子力学基态的变分波函数，并计算了几种情况下吸附能的改进值。低温下的表面迁移率通过使用变分基态波函数以量子力学的方式确定。本文导出了气体原子碰撞表面时的粘附系数S和容纳系数α的简单解析近似。本文利用以前的一些精确计算和一些实验，导出了S和α随气体温度变化的一般解析半经验公式。简要地讨论了两个吸附原子的双原子分子的表面复合。
The adsorption on solid surfaces of very light gas atoms is reconsidered. A variational wavefunction is constructed for the quantum‐mechanical ground state of the adsorbed atom, and improved values of adsorption energies are calculated for a few cases. The surface mobility at low temperatures is determined quantum mechanically, by use of the variational ground‐state wavefunction. Simple analytic approximations are derived for the sticking coefficient S and the accommodation coefficient α for gas atoms impinging on a surface. A few previous accurate calculations and some experiments are used to derive some general analytic semiempirical formulas for S and α as a function of the gas temperature. Surface recombination of diatomic molecules from two adsorbed atoms is considered briefly.