Rainbow scattering of CH4 and C2H6 molecular beams from a LiF(001) surface: Dependence on incident kinetic energy and molecular anisotropy
Rainbow scattering of CH4 and C2H6 molecular beams from a LiF(001) surface: Dependence on incident kinetic energy and molecular anisotropy
复制标题
来自 LiF(001) 表面的 CH4 和 C2H6 分子束的彩虹散射：对入射动能和分子各向异性的依赖性
DOI：
10.1116/1.1388621
复制
发表时间：
2001
期刊：
影响因子：
--
通讯作者：
Shigehiko Yamamoto
中科院分区：
文献类型：
--
作者：
T. Kondo;T. Tomii;S. Yagyu;Shigehiko Yamamoto
Angular intensity distributions of CH4 and C2H6 molecules scattered from a highly corrugated LiF(001) surface have been measured in high resolution. CH4 molecules reveal clear rainbow scattering, while C2H6 molecules do not. This difference is attributed to the structural anisotropy between these molecules; a CH4 molecule is more spherically symmetric than a C2H6 molecule. The microscopical repulsive potential corrugation of the LiF(001) surface experienced by these molecules is found to decrease as the incident kinetic energy increases. This counterintuitive lessening of the corrugation is a consequence of the potential surface arising from two very different sized substrate ions.
