Multiple Auger decays of core-excited states in N2.
Multiple Auger decays of core-excited states in N2.
复制标题
N2 中核心激发态的多次俄歇衰变。
DOI：
10.1063/1.5142587
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Y. Hikosaka
中科院分区：
文献类型：
--
作者：
T. Odagiri;T. Taniguchi;T. Kaneyasu;Hirokazu Tanaka;J. Adachi;P. Lablanquie;Y. Hikosaka
为了详细研究这些核心激发态的多个俄歇电子发射的动力学，我们对 N2 中核到价 (1s → π*) 和核到里德堡 (1s → 3sσ 和 3pπ) 共振激发的光子能量进行了多电子符合测量。在衰变过程中，通过发射两个或三个俄歇电子观察到由来自超激发原子碎片的慢速电子产生的峰，表明逐步（级联）多个俄歇衰变涉及比电子弛豫更快的解离。发射电子之间的能量分配使我们能够揭示这些过程的详细衰变机制。对于每个核心激发态，已经确定了通过发射一个、两个或三个俄歇电子的衰变之间的分支比以及同时（直接）和逐步（级联）过程之间的分支比。导致分子或碎片离子的衰变通道的分支比率也已得到证实。
Multi-electron coincidence measurements have been performed at the photon energies for the core-to-valence (1s → π*) and core-to-Rydberg (1s → 3sσ and 3pπ) resonant excitations in N2 in order to investigate the dynamics of multiple Auger-electron emissions from these core-excited states in detail. Peaks due to slow electrons from superexcited atomic fragments are observed in the decay processes by emission of two or three Auger electrons, indicating stepwise (cascade) multiple Auger decays that involve faster dissociations than electronic relaxations. Energy partitions between the emitted electrons enable us to reveal the detailed decay mechanisms for these processes. Branching ratios among the decays by emission of one, two, or three Auger electrons and those between the simultaneous (direct) and stepwise (cascade) processes have been determined for each of the core-excited states. Branching ratios of decay channels resulting in molecular or fragment ions have also been substantiated.
影响因子：
2.9
作者：
T. Kaneyasu;Y. Hikosaka;E. Shigemasa;F. Penent;P. Lablanquie;T. Aoto;K. Ito
通讯作者：
T. Kaneyasu;Y. Hikosaka;E. Shigemasa;F. Penent;P. Lablanquie;T. Aoto;K. Ito