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Propensity rules and interference effects in laser-Assisted photoionization of helium and neon

Bertolino, Mattias LU orcid ; Busto, David LU orcid ; Zapata, Felipe LU and Dahlström, Jan Marcus LU (2020) In Journal of Physics B: Atomic, Molecular and Optical Physics 53(14).
Abstract

We investigate the angle-resolved photoelectron spectra from laser-Assisted photoionization for helium and neon atoms using an ab initio method based on time-dependent surface flux and configuration interaction singles. We find that the shape of the distributions can be interpreted using a propensity rule, an intrinsic difference in the absorption and the emission processes, as well as interference effects between multiple paths to the final angular momentum state. The difference between absorption and emission is hidden in the first sideband in neon due to the multiple competing m channels, while in the second sideband a qualitative difference between absorption and emission is observed. In the m-resolved case, a clear difference is... (More)

We investigate the angle-resolved photoelectron spectra from laser-Assisted photoionization for helium and neon atoms using an ab initio method based on time-dependent surface flux and configuration interaction singles. We find that the shape of the distributions can be interpreted using a propensity rule, an intrinsic difference in the absorption and the emission processes, as well as interference effects between multiple paths to the final angular momentum state. The difference between absorption and emission is hidden in the first sideband in neon due to the multiple competing m channels, while in the second sideband a qualitative difference between absorption and emission is observed. In the m-resolved case, a clear difference is observed already in the first sideband, as exemplified in helium and m-resolved neon.

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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
electronic excitation and ionization, light matter interaction, photoemission, single-and few-photon ionization and excitation, ultrafast phenomena
in
Journal of Physics B: Atomic, Molecular and Optical Physics
volume
53
issue
14
article number
144002
publisher
IOP Publishing
external identifiers
  • scopus:85086995064
ISSN
0953-4075
DOI
10.1088/1361-6455/ab84c4
language
English
LU publication?
yes
id
4c3b4c6b-b911-44a9-8b16-1ab119c5e0c4
date added to LUP
2020-07-07 10:47:41
date last changed
2023-10-22 11:19:18
@article{4c3b4c6b-b911-44a9-8b16-1ab119c5e0c4,
  abstract     = {{<p>We investigate the angle-resolved photoelectron spectra from laser-Assisted photoionization for helium and neon atoms using an ab initio method based on time-dependent surface flux and configuration interaction singles. We find that the shape of the distributions can be interpreted using a propensity rule, an intrinsic difference in the absorption and the emission processes, as well as interference effects between multiple paths to the final angular momentum state. The difference between absorption and emission is hidden in the first sideband in neon due to the multiple competing m channels, while in the second sideband a qualitative difference between absorption and emission is observed. In the m-resolved case, a clear difference is observed already in the first sideband, as exemplified in helium and m-resolved neon. </p>}},
  author       = {{Bertolino, Mattias and Busto, David and Zapata, Felipe and Dahlström, Jan Marcus}},
  issn         = {{0953-4075}},
  keywords     = {{electronic excitation and ionization; light matter interaction; photoemission; single-and few-photon ionization and excitation; ultrafast phenomena}},
  language     = {{eng}},
  number       = {{14}},
  publisher    = {{IOP Publishing}},
  series       = {{Journal of Physics B: Atomic, Molecular and Optical Physics}},
  title        = {{Propensity rules and interference effects in laser-Assisted photoionization of helium and neon}},
  url          = {{http://dx.doi.org/10.1088/1361-6455/ab84c4}},
  doi          = {{10.1088/1361-6455/ab84c4}},
  volume       = {{53}},
  year         = {{2020}},
}