2023
DOI: 10.1103/physreva.107.l020801
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Unexpected dipole instabilities in small molecules after ultrafast XUV irradiation

Abstract: We investigate the depletion of deep-lying single-electron states in the N2 dimer under the influence of very short XUV pulses. We find, first, a marked occupation inversion for a certain window of XUV energies around 50 eV where depletion of the deepest bound valence electron state is much larger than for any other state, and second, that this occupation inversion drives a dipole instability, i.e. a spontaneous reappearance of the dipole signal long after the laser pulse is over and the initial dipole oscilla… Show more

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Cited by 2 publications
(2 citation statements)
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“…In addition, it was shown to be a realistic situation for ionization with ultrashort laser pulses. 53 Our initial state is therefore created by removing an electron from one of the two orbitals at t = 0. The initial state is then propagated using the multielectron wave packet propagation method.…”
Section: ■ Results and Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…In addition, it was shown to be a realistic situation for ionization with ultrashort laser pulses. 53 Our initial state is therefore created by removing an electron from one of the two orbitals at t = 0. The initial state is then propagated using the multielectron wave packet propagation method.…”
Section: ■ Results and Discussionmentioning
confidence: 99%
“…It is usually a very good approximation for high-energy photon ionization and was found to be a good approximation in the context of charge migration by Ayuso et al who performed simulations with and without it. In addition, it was shown to be a realistic situation for ionization with ultrashort laser pulses . Our initial state is therefore created by removing an electron from one of the two orbitals at t = 0.…”
Section: Resultsmentioning
confidence: 99%