Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8039171 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2018 | 7 Pages |
Abstract
Molecular dynamics simulations were conducted to study the bombardment process of a single helium atom on a tungsten nanoparticle. Helium atoms ranging from 50â¯eV to 50â¯keV were injected into tungsten nanoparticles with a diameter in the range of 2-12â¯nm. The retention and reflection of projectiles and sputtering of nanoparticles were calculated at various times. The results were found to be relative to the nanoparticle size and projectile energy. The projectile energy of 100â¯eV contributes to the largest retention of helium atoms in tungsten nanoparticles. The most obvious difference in reflection exists in the range of 3-10â¯keV. Around 66% of sputtering atoms is in forward direction for projectiles with incident energy higher than 10â¯keV. Moreover, the axial direction of the nanoparticles was demonstrated to influence the bombardment to some degree.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Surfaces, Coatings and Films
Authors
Min Li, Qing Hou, Jiechao Cui, Jun Wang,