Rotational alignment in associative desorption of D-2(v''=0 and 1) from Pd(100)

被引：75

作者：

Wetzig, D ^{[1
]}

Dopheide, R ^{[1
]}

Rutkowski, M ^{[1
]}

David, R ^{[1
]}

Zacharias, H ^{[1
]}

机构：

[1] FORSCHUNGSZENTRUM JULICH, FORSCHUNGSZENTRUM, INST GRENZFLACHENFORSCH & VAKUUMPHYS, D-52428 JULICH, GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.76.463

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the first measurement of the preferential steric orientation of D-2 molecules associatively desorbing from a metal surface. The flux of D-2 desorbing from Pd(100) is probed by laser induced fluorescence with linearly polarized tunable vacuum ultraviolet radiation in the B (1) Sigma(u)(+)(v',J',M') <-- X(1) Sigma(g)(+)(v '',J '',M '') Lyman bands. In (v '' = 0) an increasing positive alignment with rotational quantum number is observed up to J '' = 6, establishing the preferred helicopter motion of the molecules. In (v '' = 1) and also for (v '' = 0,J '' = 7 and 8) an isotropic J vector distribution is measured.

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页码：463 / 466

页数：4

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