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Photoionization Time Delays Probe Electron Correlations

Li, Mingxuan LU ; Wang, Huiyong LU ; Tahouri, Rezvan LU orcid ; Weissenbilder, Robin LU ; Li, Jialong LU ; Wang, Wentao ; Cai, Jiaao ; Hong, Xiaochun ; Shi, Xiaosen and Pi, Liang Wen , et al. (2025) In Physical Review Letters 135(18).
Abstract

The photoelectric effect explained by Einstein is often regarded as a one-electron phenomenon, whereas the interaction of the escaping electron with other electrons, referred to as electron correlation, plays an important role in multielectron systems. In this Letter, we study the attosecond photoionization of the outer s subshell of argon in its substantial minimum cross-section region formed by electron correlation, which was theoretically predicted in 1972 and experimentally confirmed using synchrotron radiation. Combining high-spectral resolution attosecond interferometry experiments and novel theoretical calculations allows us to identify the most essential electron correlations affecting the time of photoemission, solving the... (More)

The photoelectric effect explained by Einstein is often regarded as a one-electron phenomenon, whereas the interaction of the escaping electron with other electrons, referred to as electron correlation, plays an important role in multielectron systems. In this Letter, we study the attosecond photoionization of the outer s subshell of argon in its substantial minimum cross-section region formed by electron correlation, which was theoretically predicted in 1972 and experimentally confirmed using synchrotron radiation. Combining high-spectral resolution attosecond interferometry experiments and novel theoretical calculations allows us to identify the most essential electron correlations affecting the time of photoemission, solving the long-standing inconsistency between measurements and theories, and demonstrating the contribution of coherent couplings with shakeup channels. The measurement of time delays gives unprecedented insight into the photoionization process, unraveling details of the atomic potential experienced by the escaping electron and capturing its dynamics.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
135
issue
18
article number
183202
publisher
American Physical Society
external identifiers
  • pmid:41247951
  • scopus:105022224514
ISSN
0031-9007
DOI
10.1103/ll25-15dm
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2025 American Physical Society.
id
87321f30-2acf-4d52-8a0f-58edc9bc71f1
date added to LUP
2025-12-01 11:33:39
date last changed
2025-12-15 13:03:10
@article{87321f30-2acf-4d52-8a0f-58edc9bc71f1,
  abstract     = {{<p>The photoelectric effect explained by Einstein is often regarded as a one-electron phenomenon, whereas the interaction of the escaping electron with other electrons, referred to as electron correlation, plays an important role in multielectron systems. In this Letter, we study the attosecond photoionization of the outer s subshell of argon in its substantial minimum cross-section region formed by electron correlation, which was theoretically predicted in 1972 and experimentally confirmed using synchrotron radiation. Combining high-spectral resolution attosecond interferometry experiments and novel theoretical calculations allows us to identify the most essential electron correlations affecting the time of photoemission, solving the long-standing inconsistency between measurements and theories, and demonstrating the contribution of coherent couplings with shakeup channels. The measurement of time delays gives unprecedented insight into the photoionization process, unraveling details of the atomic potential experienced by the escaping electron and capturing its dynamics.</p>}},
  author       = {{Li, Mingxuan and Wang, Huiyong and Tahouri, Rezvan and Weissenbilder, Robin and Li, Jialong and Wang, Wentao and Cai, Jiaao and Hong, Xiaochun and Shi, Xiaosen and Pi, Liang Wen and Busto, David and Gisselbrecht, Mathieu and Ueda, Kiyoshi and Demekhin, Philipp V. and L'Huillier, Anne and Dahlström, Jan Marcus and Lindroth, Eva and Ding, Dajun and Luo, Sizuo}},
  issn         = {{0031-9007}},
  language     = {{eng}},
  month        = {{10}},
  number       = {{18}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{Photoionization Time Delays Probe Electron Correlations}},
  url          = {{http://dx.doi.org/10.1103/ll25-15dm}},
  doi          = {{10.1103/ll25-15dm}},
  volume       = {{135}},
  year         = {{2025}},
}