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首页> 外文期刊>The Journal of Chemical Physics >Ultrafast multiphoton ionization dynamics and control of NaK molecules
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Ultrafast multiphoton ionization dynamics and control of NaK molecules

机译：超快多光子电离动力学和NaK分子控制

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The multiphoton ionization dynamics of NaK molecules is investigated experimentally using one-color pump-probe femtosecond spectroscopy at 795 nm and intermediate laser field strengths (about 10 GW/cm(2)). Both NaK+ and Na+ ions are detected as a function of pulse separation time, pulse intensities, and strong pulse-weak pulse order. To aid in the analysis, the potential energy curves of the two lowest electronic states of NaK+ and the electronic transition dipole moment between them are calculated by the GAUSSIAN94 UCIS method. Different ionization pathways are identified by Franck-Condon analysis, and vibrational dynamics in the A (1)Sigma(+) and 3 (1)Pi. states, as well as in the ground state, is observed. Further, the existence of a highly excited (above the adiabatic ionization limit) neutral state of NaK is proposed. By changing the strong pulse-weak pulse order of the pulses, the ionization pathways for production of both ions can be varied and thus controlled. (C) 1998 American Institute of Physics. [S0021-9606(98)00448-6]. [References: 55]
机译：NaK分子的多光子电离动力学是使用一种单色泵浦飞秒飞秒光谱法在795 nm和中等激光场强度（大约10 GW / cm（2））上进行实验研究的。根据脉冲分离时间，脉冲强度和强脉冲弱脉冲阶次检测到NaK +和Na +离子。为了帮助分析，通过GAUSSIAN94 UCIS方法计算了NaK +的两个最低电子态的势能曲线及其之间的电子跃迁偶极矩。通过Franck-Condon分析和A（1）Sigma（+）和3（1）Pi中的振动动力学来识别不同的电离途径。观察到处于基态和基态。此外，提出了NaK的高激发（绝热电离极限以上）中性态的存在。通过改变脉冲的强脉冲-弱脉冲顺序，可以改变并控制产生两种离子的电离途径。 （C）1998美国物理研究所。 [S0021-9606（98）00448-6]。 [参考：55]

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