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Liu J, Li Y, Hou Y, Wu J, Yuan J. Transient responses of double core-holes generation in all-attosecond pump-probe spectroscopy. Sci Rep 2024; 14:1950. [PMID: 38253674 DOI: 10.1038/s41598-024-52197-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Accepted: 01/15/2024] [Indexed: 01/24/2024] Open
Abstract
Double core-holes (DCHs) show remarkable and sensitive effects for understanding electron correlations and coherence. With advanced modulation of x-ray free-electron laser (XFEL) facility, we propose the forthcoming all-attosecond XFEL pump-probe spectroscopy can decipher the hidden photon-initiated dynamics of DCHs. The benchmark case of neon is investigated, and norm-nonconserving Monte-Carlo wavefunction method simulates non-Hermitian dynamics among vast states, which shows superiority in efficiency and reliability. In our scheme, population transfer to DCHs is sequentially irradiated by pump and probe laser. By varying time delay, Stark shifts and quantum path interference of resonant lines sensitively emerge at specific interval of two pulses. These ubiquitous multi-channel effects are also observed in phase-fluctuating pulses, derived from extra phases of impulsive Raman processes by pump laser. Non-perturbation absorption/emission verifies the uniquely interchangeable role of two pules in higher intensity. Our results reveal sensitive and robust responses on pulse parameters, which show potential capacity for XFEL attosecond pulse diagnosis and further attosecond-timescale chemical analysis.
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Affiliation(s)
- Jianpeng Liu
- College of Science, National University of Defense Technology, Changsha, 410073, China
- Hunan Key Laboratory of Extreme Matter and Applications, National University of Defense Technology, Changsha, 410073, China
| | - Yongqiang Li
- College of Science, National University of Defense Technology, Changsha, 410073, China
- Hunan Key Laboratory of Extreme Matter and Applications, National University of Defense Technology, Changsha, 410073, China
| | - Yong Hou
- College of Science, National University of Defense Technology, Changsha, 410073, China
- Hunan Key Laboratory of Extreme Matter and Applications, National University of Defense Technology, Changsha, 410073, China
| | - Jianhua Wu
- College of Science, National University of Defense Technology, Changsha, 410073, China.
- Hunan Key Laboratory of Extreme Matter and Applications, National University of Defense Technology, Changsha, 410073, China.
| | - Jianmin Yuan
- Department of Physics, Graduate School of China Academy of Engineering Physics, Beijing, 100193, China.
- Institute of Atomic and Molecular Physics, Jilin University, Changchun, 130012, China.
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