TY - JOUR
T1 - Sputtering of Be/C/W compounds in Molecular Dynamics and ERO simulations
AU - Airila, Markus I.
AU - Björkas, Carolina
AU - Esquisabel, Ane Lasa
AU - Sand, Andrea Elisabet
AU - Nordlund, Kai Henrik
AU - Vörtler, Katharina
PY - 2013/7
Y1 - 2013/7
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.
UR - https://researchportal.helsinki.fi/en/publications/47fc5585-5f37-4d06-a899-96de36106091
U2 - 10.1016/j.jnucmat.2013.01.123
DO - 10.1016/j.jnucmat.2013.01.123
M3 - Article
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
SN - 0022-3115
ER -