Gong, HF
; Huai, P (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Div Nucl Mat & Engn, Shanghai 201800, Peoples R China.
文章类型:
期刊文献
英文摘要:
Using molecular dynamics simulation, we investigated the energy and stability of helium-related cluster in nickel. All the binding energies of the He-related clusters are demonstrated to be positive and increase with the cluster sizes. Due to the pre-existed self-interstitial nickel atom, the trapping capability of vacancy to defects becomes weak. Besides, the minimum energy configurations of He-related clusters exhibit the very high symmetry in the local atomistic environment. And for the He-N and He(N)V(1)SIA(1) clusters, the average length of He-He bonds shortens, but it elongates for the HeNV1I clusters with helium cluster sizes. The helium-to-vacancy ratio plays a decisive role on the binding energies of HeNVM cluster. These results can provide some excellent clues to insight the initial stage of helium bubbles nucleation and growth in the Ni-based alloys for the Generation-IV Molten Salt Reactor. (C) 2015 Elsevier B.V. All rights reserved.
Gong, HF,Wang, CB,Zhang, W,et al. The energy and stability of helium-related cluster in nickel: A study of molecular dynamics simulation[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,2016-01-01,368(-):75—80.
