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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Pump-probe scheme to study the autoionization decay of optically-forbidden H2 doubly excited states
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Pump-probe scheme to study the autoionization decay of optically-forbidden H2 doubly excited states

机译：泵浦方案研究光学禁止的H2双激发态的自电离衰减

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摘要

A pump-probe scheme is proposed to investigate the autoionization dynamics of the optically forbidden Q_1 ~1Σg~+ doubly excited states of the H2 molecule. The scheme consists of a pump that contains an attosecond pulse train (APT) and an infrared (IR) pulse, which is phase-locked with the APT, and an IR probe identical to the former IR pulse. The dynamical information is obtained by analyzing the electron kinetic energy spectra (EKE) and proton kinetic energy spectra (PKE) as a function of the time delay between the pump and the probe. The essential requirement for an efficient population of the Q_1 ~1Σg~+ states is that they are resonantly coupled to both the dipole-allowed Q_1 ~1Σu~+ doubly excited states and the ground state of H_2 by the combined effect of the APT + IR fields.
机译：提出了一种泵-探针方案来研究H 2分子的光学禁止的Q_1〜1Σg〜+双激发态的自电离动力学。该方案包括一个泵，该泵包含一个阿秒脉冲串（APT）和一个与APT锁相的红外（IR）脉冲，以及一个与以前的IR脉冲相同的IR探针。通过分析电子动能谱（EKE）和质子动能谱（PKE）作为泵和探头之间的时间延迟的函数，可以获得动力学信息。有效填充Q_1〜1Σg〜+态的基本要求是它们通过APT + IR的组合效应与偶极子允许的Q_1〜1Σu〜+双激发态和H_2的基态共振耦合。领域。

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