首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Steric Effects in the Scattering of Oriented CH3Cl Molecular Beam from a Si(111) Surface
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Steric Effects in the Scattering of Oriented CH3Cl Molecular Beam from a Si(111) Surface

机译:Si(111)表面定向CH3Cl分子束散射中的立体效应

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We report results of a study on steric effects appearing in the scattering of an oriented CH3Cl molecular beam from Si(111) at surface temperatures g300 K. Data presented here show that the scattered CH3Cl beam intensity measured at fixed scattering angles clearly depends on the initial molecular (CH3Cl) orientation toward the Si surface. The scattered CH3Cl beam intensity for the CH3-end collision is larger than that for the Cl-end collision, suggesting that strong anisotropy of the interaction potential induces the molecular-orientationdependent energy dissipation during transient trapping into a shallow potential well.
机译:我们报告了在表面温度为g300 K时来自Si(111)的定向CH3Cl分子束的散射中出现的空间效应的研究结果。此处显示的数据表明,在固定散射角下测得的CH3Cl散射束强度明显取决于初始分子(CH3Cl)朝向Si表面的取向。 CH3末端碰撞的散射CH3Cl束强度大于Cl末端碰撞的散射强度,表明相互作用势的强各向异性会导致瞬态俘获到浅势阱期间诱导分子取向相关的能量消散。

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