Resonant Auger Scattering by Attosecond X-Ray Pulses  

作　　者：南全伟 王超 余心悦 赵曦 程勇军 宫毛毛 刘小井 Victor Kimberg 张松斌 Quan-Wei Nan;Chao Wang;Xin-Yue Yu;Xi Zhao;Yongjun Cheng;Maomao Gong;Xiao-Jing Liu;Victor Kimberg;Song-Bin Zhang(School of Physics and Information Technology,Shaanxi Normal University,Xi’an 710119,China;School Physical Science and Technology,ShanghaiTech University,Shanghai 201210,China;International Research Center of Spectroscopy and Quantum Chemistry–IRC SQC,Siberian Federal University,Krasnoyarsk 660041,Russia)

机构地区：[1]School of Physics and Information Technology,Shaanxi Normal University,Xi’an 710119,China [2]School Physical Science and Technology,ShanghaiTech University,Shanghai 201210,China [3]International Research Center of Spectroscopy and Quantum Chemistry–IRC SQC,Siberian Federal University,Krasnoyarsk 660041,Russia

出　　处：《Chinese Physics Letters》2023年第9期38-42,共5页中国物理快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11934004 and 11974230);Russian Science Foundation(Grant No.21-12-00193)。

摘　　要：As x-ray probe pulses approach the subfemtosecond range,conventional x-ray photoelectron spectroscopy(XPS)is expected to experience a reduction in spectral resolution due to the effects of the pulse broadening.However,in the case of resonant x-ray photoemission,also known as resonant Auger scattering(RAS),the spectroscopic technique maintains spectral resolution when an x-ray pulse is precisely tuned to a core-excited state.We present theoretical simulations of XPS and RAS spectra on a showcased CO molecule using ultrashort x-ray pulses,revealing significantly enhanced resolution in the RAS spectra compared to XPS,even in the subfemtosecond regime.These findings provide a novel perspective on potential utilization of attosecond x-ray pulses,capitalizing on the well-established advantages of detecting electron signals for tracking electronic and molecular dynamics.

关 键 词：DYNAMICS STATE RESONANT 

分 类 号：O434.1[机械工程—光学工程]