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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Angular Dependence of Strong Field Ionization of CH3X (X = F, Cl, Br, or I) Using Time-Dependent Configuration Interaction with an Absorbing Potential
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Angular Dependence of Strong Field Ionization of CH3X (X = F, Cl, Br, or I) Using Time-Dependent Configuration Interaction with an Absorbing Potential

机译:CH3x(X = F,CL,BR,B或i)的强场电离的角依赖性使用与吸收电位的时间依赖性配置相互作用

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摘要

Methyl halides have been used to test basis set effects on simulations of strong field ionization using time dependent configuration interaction with an absorbing potential. Standard atom centered basis sets need to be augmented by several sets of diffuse functions on each atom so that the wave function in the strong field can interact with the absorbing potential used to model ionization. An absorbing basis of 3 s functions, 2 p functions, 3 d functions, and 1 f function is sufficient for CH3F. Large absorbing basis sets with 4 s functions, 3 or 4 p functions, 4 or 5 d functions, and 2 f functions are recommended for the heavier halogens. The simulations used static fields in the 0.035-0.07 au range to explore the angular dependence of ionization of methyl halides. CH3F ionizes mainly from the methyl group; CH3Cl and CH3Br show ionization from both the methyl group and ionizes almost exclusively from the p orbitals of the iodine. the halogen, and CH3I ionizes almost exclusively from the p(pi) orbitals of the iodine.
机译:使用时间依赖性配置相互作用与吸收潜力的时间依赖性配置相互作用,已使用甲基卤化物对基于强场电离的模拟进行测试。标准原子居中需要在每个原子上通过几组漫射功能来增强,使得强场中的波浪功能可以与用于模拟电离的吸收电位相互作用。吸收基础为3 S功能,2 P功能,3d功能和1 F功能足以进行CH3F。带有4次功能的大吸收基集,3或4个功能,4或5 D功能,较重的卤素建议使用2V功能。仿真在0.035-0.07 Au范围内使用静态场,探讨甲基卤化物电离的角度依赖性。 CH3F主要来自甲基; CH3CL和CH3BR显示来自甲基的离子化,几乎完全来自碘的P轨道。卤素和CH3I几乎完全来自碘的P(PI)轨道。

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