Rotational alignment in the associative desorption dynamics of hydrogen molecules from metal surfaces

被引：19

作者：

Dino, WA ^{[1
]}

Kasai, H

Okiji, A

机构：

[1] Osaka Univ, Dept Appl Phys, Suita, Osaka 5650871, Japan

[2] Osaka Univ, Dept Mat & Life Sci, Suita, Osaka 5650871, Japan

[3] Wakayama Natl Coll Technol, Wakayama 6440023, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1998年 / 67卷 / 05期

关键词：

H-2(D-2); Cu(111); Pd(111); associative desorption; rotational alignment; orientation-dependent potential energy surface (PES); rotational quantum state filter/sieve; dynamical quantum filter; rotational excitation (de-excitation); nonmonotonic j-(E-t-) dependence;

D O I：

10.1143/JPSJ.67.1517

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report that the alignment factors of hydrogen molecules desorbing in the vibrational sound state from Cu(111) and Pd(111) vary nonmonotonically with the final rotational state j depending on the translational energy. Upon averaging over the Boltzmann distribution of total kinetic energies at surface temperatures relevant to existing experiments, the resulting alignment factor value corresponds to a small preference for helicopter-like rotation.

引用

页码：1517 / 1520

页数：4

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