TY - JOUR
T1 - Simulation of cascades in tungsten-helium
AU - Juslin, Niklas
AU - Jansson, Ville
AU - Nordlund, Kai
A2 - Malerba, Lorenzo
PY - 2010/9/14
Y1 - 2010/9/14
N2 - Helium (He) is present in fusion reactor wall materials, and its effect on radiation damage must be taken into account. The effect of He on displacement cascades in tungsten (W) has been studied using molecular dynamics simulations. Three different W-W potentials were compared and found to differ, especially for the clustering of the vacancies formed in the cascades. While there are differences in the amounts of damage depending on the potential, the overall effect of He in interstitial positions was to increase the amount of damage, while He in substitutional positions reduce it, due to the effect He has on the recombination of tungsten interstitials.
AB - Helium (He) is present in fusion reactor wall materials, and its effect on radiation damage must be taken into account. The effect of He on displacement cascades in tungsten (W) has been studied using molecular dynamics simulations. Three different W-W potentials were compared and found to differ, especially for the clustering of the vacancies formed in the cascades. While there are differences in the amounts of damage depending on the potential, the overall effect of He in interstitial positions was to increase the amount of damage, while He in substitutional positions reduce it, due to the effect He has on the recombination of tungsten interstitials.
KW - tungsten
KW - helium
KW - radiation damage
KW - displacement cascade
UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_107475
UR - http://knowledgecentre.sckcen.be/so2/bibref/7167
U2 - 10.1080/14786435.2010.492248
DO - 10.1080/14786435.2010.492248
M3 - Article
SN - 0031-8086
VL - 90
SP - 3581
EP - 3589
JO - Philosophical Magazine
JF - Philosophical Magazine
IS - 26
ER -