Molecular-dynamics study of craters formed by energetic Cu cluster impact on Cu

被引：55

作者：

Aderjan, R ^{[1
]}

Urbassek, HM ^{[1
]}

机构：

[1] Univ Kaiserslautern, Fachbereich Phys, D-67663 Kaiserslautern, Germany

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2000年 / 164卷

关键词：

D O I：

10.1016/S0168-583X(99)01111-8

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We study crater formation induced by energetic Cu-n (n = 13, 43) cluster impact with energies between 5 and 20 keV on a Cu (1 0 0) surface. Due to the melt film covering the crater walls and to the high atomic mobility in the crater rims, the stabilisation of the final crater shape and volume lasts up to 20 ps. Craters are formed above a threshold bombarding energy of around 5 keV; then the crater volume increases linearly with bombarding energy. The crater shape is roughly hemispherical; towards the threshold, craters become shallow. By modifying the interatomic many-body potential, we study the influence of the target cohesive energy on the crater size, and find an inverse-square dependence. Comparison with observations of cratering induced by macroscopic impact (such as meteorites) is discussed. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：697 / 704

页数：8

共 23 条

[1] Molecular dynamics simulation of damage formation by cluster ion impact [J].

Aoki, T ;

Matsuo, J ;

Insepov, Z ;

Yamada, I .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1997, 121 (1-4) :49-52

[2] MD STUDIES OF THE INTERACTIONS OF LOW-ENERGY PARTICLES AND CLUSTERS WITH SURFACES [J].

AVERBACK, RS ;

GHALY, M .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1994, 90 (1-4) :191-201

[3] Cluster bombardment of solids: A molecular dynamics study [J].

Betz, G ;

Husinsky, W .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1997, 122 (03) :311-317

[4] CLUSTER-SOLID INTERACTION EXPERIMENTS [J].

BROWN, WL ;

SOSNOWSKI, M .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1995, 102 (1-4) :305-311

[5] MODEL STUDY OF KEV-ION MIXING OF METALLIC INTERFACES - INFLUENCE OF MATERIALS PROPERTIES AND DEPOSITED ENERGY [J].

GADES, H ;

URBASSEK, HM .

PHYSICAL REVIEW B, 1995, 51 (20) :14559-14569

[6] SURFACE BINDING-ENERGIES OF ALLOYS - A MANY-BODY APPROACH [J].

GADES, H ;

URBASSEK, HM .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1994, 88 (03) :218-228

[7] EFFECT OF VISCOUS-FLOW ON ION DAMAGE NEAR SOLID-SURFACES [J].

GHALY, M ;

AVERBACK, RS .

PHYSICAL REVIEW LETTERS, 1994, 72 (03) :364-367

[8]

GNASER H, 1999, SPRINGER TRACTS MODE, V146

[9]

GSPANN J, 1992, PHYSICS CHEM FINITE, V2, P1115

[10] MOLECULAR-DYNAMICS SIMULATION OF THIN-FILM GROWTH BY ENERGETIC CLUSTER-IMPACT [J].

HABERLAND, H ;

INSEPOV, Z ;

MOSELER, M .

PHYSICAL REVIEW B, 1995, 51 (16) :11061-11067

← 1 2 3 →