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首页> 外文期刊>Physics Reports: A Review Section of Physics Letters (Section C) >Interaction of vacuum ultraviolet photons with molecules. Formation and dissociation dynamics of molecular superexcited states [Review]
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Interaction of vacuum ultraviolet photons with molecules. Formation and dissociation dynamics of molecular superexcited states [Review]

机译：真空紫外光子与分子的相互作用。分子超激发态的形成和解离动力学[综述]

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摘要

A survey is given of recent progress in experimental studies of photoabsorption, photoionization, and photodissociation of molecules in the wavelength range of photons in the vacuum ultraviolet. Corresponding photon energies are 10-50 eV, at which most of the optical oscillator strength of molecules are distributed. Examples of molecules chosen here range from simple diatomic and triatomic molecules to polyatomic molecules such as hydrocarbons, alcohols, ethers, and some Si-containing compounds in the gas phase. Some remarks are presented on molecules in the condensed phase. A particular emphasis in the survey is placed on current understanding of the spectroscopy and dissociation dynamics of molecules in the superexcited states which are produced in the interaction of photons in this wavelength (or energy) range with molecules. A comparative survey is also given of the spectroscopy and dynamics of superexcited states which are produced in electron-molecule collisions. Most of the observed superexcited states are assigned to high Rydberg states which are vibrationally (or/and rotationally), doubly, or inner-core excited, and converge to each of ion states. Non-Rydberg superexcited states are also observed. Some remarks are also presented of superexcited states as reaction intermediates or collision complexes in electron-ion recombination, electron attachment, and Penning ionization processes. (C) 1999 Elsevier Science B.V. All rights reserved. [References: 241]
机译：给出了在真空紫外光子的波长范围内分子的光吸收，光电离和光解离的实验研究的最新进展的调查。相应的光子能量为10-50 eV，在该能量下，分子的大多数光学振荡器强度都分布了。此处选择的分子的例子包括从简单的双原子和三原子分子到气相中的多原子分子，例如烃，醇，醚和一些含硅化合物。在凝聚相的分子上有一些评论。调查中的一个特别重点放在当前对超激发态下分子的光谱学和解离动力学的理解上，这种超激发态是在该波长（或能量）范围内的光子与分子相互作用时产生的。还对电子分子碰撞中产生的超激发态的光谱和动力学进行了比较研究。大多数观察到的超激发态被分配给高里德堡态，这些高里德堡态被振动（或/和旋转），双重或内核激发，并会聚到每个离子态。还观察到非里德伯格超兴奋状态。在电子离子复合，电子附着和潘宁电离过程中，也有一些超兴奋态作为反应中间体或碰撞络合物的陈述。 （C）1999 Elsevier Science B.V.保留所有权利。 [参考：241]

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