Sputtering of Be/C/W compounds in molecular dynamics and ERO simulations

被引：4

作者：

Airila, M. I. ^{[1
]}

Bjorkas, C. ^{[2
,3
]}

Lasa, A. ^{[2
]}

Meinander, A. ^{[2
]}

Nordlund, K. ^{[2
]}

Vortler, K. ^{[2
]}

机构：

[1] VTT Tech Res Ctr Finland, Assoc Euratom Tekes, FI-02044 Espoo, Finland

[2] Univ Helsinki, Assoc Euratom Tekes, FIN-00014 Helsinki, Finland

[3] Forschungszentrum Julich, Assoc EURATOM FZJ, D-52428 Julich, Germany

来源：

JOURNAL OF NUCLEAR MATERIALS | 2013年 / 438卷

基金：

芬兰科学院; 欧盟地平线“2020”;

关键词：

SURFACES; EROSION; SOLIDS; YIELD; CODE; ITER;

D O I：

10.1016/j.jnucmat.2013.01.123

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have implemented molecular dynamics (MD) generated sputtering data in the Monte Carlo impurity transport code ERO. The data set covers D bombardment of BeC, Be2C, Be2W, W2C and WC that are potentially formed on divertor targets in machines operating with an ITER-like wall. We see that intermediate compounds can have a sputtering yield different from that estimated from a homogeneous mixture, especially in the case of carbide formation with its characteristic strong bonding. At other stoichiometries, grain formation affect the yields. We also observe preferential sputtering of the lighter elements and molecular release. A linear interpolation method is proposed for the evaluation of the sputtering behaviour of any ternary Be/C/W composition. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：S589 / S593

页数：5

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