刊名:Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
出版年:2017
出版时间:15 February 2017
年:2017
卷:393
期:Complete
页码:140-143
全文大小:1430 K
卷排序:393
文摘
Helium atoms interact via the He induced Friedel oscillations of electron densities. He-He global binding energy minimum of ∼−0.09 eV is reached at an optimal electron density of 0.04 e/Å3, corresponding to an optimal He-He separation of ∼1.7 Å. The present results can qualitatively interpret the well-known He self-trapping behavior in metals.