| ATOMIC AND MOLECULAR PHYSICS |
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Resonant Auger Scattering by Attosecond X-Ray Pulses |
| Quan-Wei Nan1†, Chao Wang1†, Xin-Yue Yu1†, Xi Zhao1, Yongjun Cheng1, Maomao Gong1, Xiao-Jing Liu2, Victor Kimberg3, and Song-Bin Zhang1* |
1School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710119, China
2School Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
3International Research Center of Spectroscopy and Quantum Chemistry–IRC SQC, Siberian Federal University, Krasnoyarsk 660041, Russia
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| Cite this article: |
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Quan-Wei Nan, Chao Wang, Xin-Yue Yu et al 2023 Chin. Phys. Lett. 40 093201 |
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Abstract 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 sub-femtosecond 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.
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Received: 07 July 2023
Editors' Suggestion
Published: 23 August 2023
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| PACS: |
32.80.Hd
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(Auger effect)
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33.20.Xx
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(Spectra induced by strong-field or attosecond laser irradiation)
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32.30.Rj
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(X-ray spectra)
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82.80.Pv
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(Electron spectroscopy (X-ray photoelectron (XPS), Auger electron spectroscopy (AES), etc.))
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