Tracing nuclear-wave-packet dynamics in singly and doubly charged states of N2 and O2 with XUV-pump-XUV-probe experiments
Tracing nuclear-wave-packet dynamics in singly and doubly charged states of N2 and O2 with XUV-pump-XUV-probe experiments
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DOI：
10.1103/physreva.86.013415
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发表时间：
2012-07-18
影响因子：
2.9
通讯作者：
Thumm, U.
中科院分区：
文献类型：
--
作者：
Magrakvelidze, M.;Herrwerth, O.;Thumm, U.
我们追踪飞秒核波包动力学的氧和氮双原子分子的离子态采用38 eV的XUV泵浦XUV探测实验在自由电子激光器在汉堡（FLASH）。通过使用反应显微镜和分裂镜设置检测重合的离子碎片来监测核动力学，以产生泵脉冲和探测脉冲。通过比较测量的动能释放光谱与经典和量子力学模拟，我们确定了电子状态的分子离子的中性分子的电离填充。对于特定的碎片电荷状态，这种比较使我们能够评估特定解离路径的相关性。
We traced the femtosecond nuclear-wave-packet dynamics in ionic states of oxygen and nitrogen diatomic molecules employing 38-eV XUV-pump-XUV-probe experiments at the free-electron laser in Hamburg (FLASH). The nuclear dynamics is monitored via the detection of coincident ionic fragments using a reaction microscope and a split-mirror setup to generate the pump and probe pulses. By comparing measured kinetic-energy-release spectra with classical and quantum-mechanical simulations, we identified electronic states of the molecular ions that are populated by ionization of the neutral molecule. For specific fragment charge states, this comparison allows us to assess the relevance of specific dissociation paths.