FEMTOSECOND DESORPTION DYNAMICS PROBED BY TIME-RESOLVED VELOCITY-MEASUREMENTS

被引：49

作者：

BUSCH, DG ^{[1
]}

GAO, SW ^{[1
]}

PELAK, RA ^{[1
]}

BOOTH, MF ^{[1
]}

HO, W ^{[1
]}

机构：

[1] CHALMERS UNIV TECHNOL,DEPT APPL PHYS,S-41296 GOTHENBURG,SWEDEN

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.75.673

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The velocity distribution of O-2 photodesorbed from Pt(111) by femtosecond laser pulses is found to be approximately Maxwellian in form, with a translational temperature that increases with laser fluence. Time-resolved measurements using a two-pulse correlation scheme reveal a subpicosecond response in the translational temperature. These results are consistent with a desorption process driven by multiple electronic transitions, where the time-dependent substrate electronic temperature influences the velocity distribution of desorbing molecules.

引用

页码：673 / 676

页数：4

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