Angle-resolved electron spectroscopy of laser-assisted Auger decay induced by a few-femtosecond x-ray pulse.
Angle-resolved electron spectroscopy of laser-assisted Auger decay induced by a few-femtosecond x-ray pulse.
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DOI：
10.1103/physrevlett.108.063007
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发表时间：
2012-02
影响因子：
8.6
通讯作者：
M. Meyer;P. Radcliffe;T. Tschentscher;J. Costello;A. Cavalieri;I. Grguraš;A. Maier;R. Kienberger;J. Bozek;C. Bostedt;S. Schorb;R. Coffee;M. Messerschmidt;C. Roedig;E. Sistrunk;L. Di Mauro;G. Doumy;K. Ueda;S. Wada;S. Düsterer;A. Kazansky;N. M. Kabachnik
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文献类型：
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作者：
M. Meyer;P. Radcliffe;T. Tschentscher;J. Costello;A. Cavalieri;I. Grguraš;A. Maier;R. Kienberger;J. Bozek;C. Bostedt;S. Schorb;R. Coffee;M. Messerschmidt;C. Roedig;E. Sistrunk;L. Di Mauro;G. Doumy;K. Ueda;S. Wada;S. Düsterer;A. Kazansky;N. M. Kabachnik
利用双色（X射线+红外）电子能谱研究了激光辅助KLL俄歇衰变，激光辅助KLL俄歇衰变是由来自直线加速器相干光源的几个飞秒X射线脉冲引起的Ne原子1s光电离引起的。在角分辨实验中，激光修正的俄歇电子谱的总宽度及其结构作为发射角的函数而显著改变。光谱的特征在于揭示了总结构的边带的强强度变化。正如理论预测的那样，这种变化是由在红外修整激光的一个光学周期的持续时间内的不同时间发射的电子的干涉引起的，这几乎与Ne 1s空位的寿命一致。
Two-color (x-ray+infrared) electron spectroscopy is used for investigating laser-assisted KLL Auger decay following 1s photoionization of atomic Ne with few-femtosecond x-ray pulses from the Linac Coherent Light Source. In an angle-resolved experiment, the overall width of the laser-modified Auger-electron spectrum and its structure change significantly as a function of the emission angle. The spectra are characterized by a strong intensity variation of the sidebands revealing a gross structure. This variation is caused, as predicted by theory, by the interference of electrons emitted at different times within the duration of one optical cycle of the infrared dressing laser, which almost coincides with the lifetime of the Ne 1s vacancy.