HIGH-ENERGY CLUSTER SURFACE COLLISIONS

被引：83

作者：

EVEN, U

SCHEK, I

JORTNER, J

机构：

[1] School of Chemistry, Tel-Aviv University, Ramat Aviv

来源：

CHEMICAL PHYSICS LETTERS | 1993年 / 202卷 / 3-4期

关键词：

D O I：

10.1016/0009-2614(93)85282-S

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Molecular dynamics simulations of high-energy collisions (initial kinetic energies E(k)0 = 10-10(6) eV) of Kr(n) (n = 8-512) clusters with a rigid Pt surface provide a microscopic description of the formation of an intracluster shock wave (temperatures up to 3 x 10(5) K and cluster internal potential energies up to approximately 10(4) eV) on a time scale of 10-500 fs, which is accompanied by novel ultrafast energy acquisition processes. High-energy ((10(-5)) x 10(3) eV) high-yield (0.5%-10%) interatomic Kr-Kr pair repulsive excitation is exhibited, being manifested in outer-shell electronic excitations and ionization, multiple ionization and Auger processes.

引用

页码：303 / 307

页数：5

共 41 条

[1] REACTION DYNAMICS AND THE CAGE EFFECT IN MICROCLUSTERS OF BR2ARN [J].