Molecular dynamics simulations of helium cluster formation in tungsten

被引：127

作者：

Henriksson, KOE ^{[1
]}

Nordlund, K ^{[1
]}

Keinonen, J ^{[1
]}

机构：

[1] Univ Helsinki, Accelerator Lab, FI-00014 Helsinki, Finland

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2006年 / 244卷 / 02期

关键词：

implantation; cluster; bubble; helium; tungsten; (100) surface; molecular dynamics simulations;

D O I：

10.1016/j.nimb.2005.10.020

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 [仪器科学与技术]; 080401 [精密仪器及机械]; 081102 [检测技术与自动化装置];

摘要：

Molecular dynamics simulations of helium implantation into single-crystalline tungsten at 0 and 300 K have been performed. Non-damaging ion energies of 50, 100 and 200 eV were used. Clusters containing up to the order of 100 He atoms were formed. These clusters were nucleated athermally, via the creation of (111) crowdion interstitials and interstitial dislocation loop punching. Ruptures of He clusters were observed, but no associated ejection of W atoms. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：377 / 391

页数：15

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