Dynamics of an argon cluster following impulsive excitation studied by molecular-dynamics simulation

被引：1

作者：

Terasaki, Akira ^{[1
]}

Kondow, Tamotsu ^{[1
]}

机构：

[1] Genesis Res Inst Inc, E Tokyo Lab, Toyota Technol Inst, Cluster Res Lab, Chiba 2720001, Japan

来源：

CHEMICAL PHYSICS LETTERS | 2009年 / 474卷 / 1-3期

关键词：

DESORPTION MASS-SPECTROMETRY; SURFACE COLLISIONS; SILICON SURFACE; GAS-PHASE; ENERGY REDISTRIBUTION; 4-CENTER REACTIONS; AQUEOUS-SOLUTION; LASER-ABLATION; ION FORMATION; DROPLET-BEAM;

D O I：

10.1016/j.cplett.2009.04.043

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 simulation is presented for an argon cluster, Ar-2057, excited impulsively via instantaneous kinetic-energy deposition to constituent atoms in a hemispherical region. A critical energy is found for the fragmentation process of an unexcited volume of the cluster, above which fission is induced, whereas ejection of atoms predominates below this threshold energy. The fission process is shown to be accompanied by a shock wave propagating across the cluster. This simulation provides a qualitative model for the disintegration dynamics of a liquid micro-droplet excited by a mid-infrared laser pulse tuned to strong absorption [A. Terasaki, J. Phys. Chem. A 111 (2007) 7671]. (C) 2009 Elsevier B. V. All rights reserved.

引用

页码：57 / 61

页数：5

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