Steric effects in the scattering of oriented CH3Cl molecular beam from a Si(111) surface.
We report results of a study on steric effects appearing in the scattering of an oriented CH(3)Cl molecular beam from Si(111) at surface temperatures > or = 300 K. Data presented here show that the scattered CH(3)Cl beam intensity measured at fixed scattering angles clearly depends on the initial molecular (CH(3)Cl) orientation toward the Si surface. The scattered CH(3)Cl beam intensity for the CH(3)-end collision is larger than that for the Cl-end collision, suggesting that strong anisotropy of the interaction potential induces the molecular-orientation-dependent energy dissipation during transient trapping into a shallow potential well.
Ito
Hironori
H
Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan.
Okada
Michio
M
Yamazaki
Daichi
D
Kasai
Toshio
T
D008737:Methyl Chloride / Q000737:chemistry*; D012825:Silicon / Q000737:chemistry*; D013499:Surface Properties; D013696:Temperature
D008737:Methyl Chloride; D012825:Silicon