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

Markus Airila; C. Björkas; A. Lasa; A. Meinander; K. Nordlund; K. Vörtler

doi:10.1016/j.jnucmat.2013.01.123

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

Markus Airila (Corresponding Author), C. Björkas, A. Lasa, A. Meinander, K. Nordlund, K. Vörtler

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3 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	S589-S593
Journal	Journal of Nuclear Materials
Volume	438
Issue number	Supplement
DOIs	https://doi.org/10.1016/j.jnucmat.2013.01.123
Publication status	Published - 2013
MoE publication type	A1 Journal article-refereed
Event	20th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices - Aachen, Aachen, Germany Duration: 21 May 2012 → 25 May 2012

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title = "Sputtering of Be/C/W compounds in molecular dynamics and ERO simulations",

abstract = "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.",

author = "Markus Airila and C. Bj{\"o}rkas and A. Lasa and A. Meinander and K. Nordlund and K. V{\"o}rtler",

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doi = "10.1016/j.jnucmat.2013.01.123",

language = "English",

volume = "438",

pages = "S589--S593",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

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note = "20th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices, PSI-20 ; Conference date: 21-05-2012 Through 25-05-2012",

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TY - JOUR

T1 - Sputtering of Be/C/W compounds in molecular dynamics and ERO simulations

AU - Airila, Markus

AU - Björkas, C.

AU - Lasa, A.

AU - Meinander, A.

AU - Nordlund, K.

AU - Vörtler, K.

PY - 2013

Y1 - 2013

N2 - 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.

AB - 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.

U2 - 10.1016/j.jnucmat.2013.01.123

DO - 10.1016/j.jnucmat.2013.01.123

M3 - Article

SN - 0022-3115

VL - 438

SP - S589-S593

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - Supplement

T2 - 20th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices

Y2 - 21 May 2012 through 25 May 2012

ER -

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

Abstract

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