Communication: Substantial impact of the orientation of transition dipole moments on the dynamics of diatomics in laser fields.
Communication: Substantial impact of the orientation of transition dipole moments on the dynamics of diatomics in laser fields.
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DOI：
10.1063/1.5054775
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发表时间：
2018-11
期刊：
影响因子：
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通讯作者：
P. Badankó;G. Halász;L. Cederbaum;Á. Vibók;A. Csehi
中科院分区：
文献类型：
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作者：
P. Badankó;G. Halász;L. Cederbaum;Á. Vibók;A. Csehi
在过去的十年中，双原子分子电子态之间的光诱导圆锥交叉（LICI）的形成已经得到了深入的研究。在运行的激光波的情况下，旋转，振动和电子运动耦合通过LICI引起强烈的非绝热现象。与自然界中的圆锥相交点不同，圆锥相交点的特性很容易被激光场的参数所改变。所产生的LICI的核间位置由激光能量确定，而角位置由跃迁偶极矩（TDM）相对于分子轴的取向给出。在目前的通信中，使用MgH+作为一个展示的例子，我们利用强烈的影响的TDM的方向施加在光诱导的非绝热动力学。比较平行或垂直跃迁诱导的光解离，在光碎片的角分布中揭示了所产生的LICIs的清晰特征。
The formation of light-induced conical intersections (LICIs) between electronic states of diatomic molecules has been thoroughly investigated over the past decade. In the case of running laser waves, the rotational, vibrational, and electronic motions couple via the LICI giving rise to strong nonadiabatic phenomena. In contrast to natural conical intersections (CIs) which are given by nature and hard to manipulate, the characteristics of LICIs are easily modified by the parameters of the laser field. The internuclear position of the created LICI is determined by the laser energy, while the angular position is given by the orientation of the transition dipole moment (TDM) with respect to the molecular axis. In the present communication, using MgH+ as a showcase example, we exploit the strong impact of the orientation of the TDMs exerted on the light-induced nonadiabatic dynamics. Comparing the photodissociations induced by parallel or perpendicular transitions, a clear signature of the created LICIs is revealed in the angular distribution of the photofragments.