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  Calculation of photoelectron spectra within the time-dependent configuration-interaction singles scheme

Karamatskou, A., Pabst, S., Chen, Y.-J., & Santra, R. (2014). Calculation of photoelectron spectra within the time-dependent configuration-interaction singles scheme. Physical Review A, 89(3): 033415. doi:10.1103/PhysRevA.89.033415.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-E87C-B Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-E87D-9
Genre: Journal Article

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PhysRevA.89.033415.pdf (Publisher version), 915KB
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PhysRevA.89.033415.pdf
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2014
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http://dx.doi.org/10.1103/PhysRevA.89.033415 (Publisher version)
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https://arxiv.org/abs/1403.0352 (Preprint)
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 Creators:
Karamatskou, Antonia1, 2, Author
Pabst, Stefan1, Author
Chen, Yi-Jen1, 2, 3, Author              
Santra, Robin1, 2, Author
Affiliations:
1Center for Free-Electron Laser Science, DESY, D-22607 Hamburg, Germany, ou_persistent22              
2Department of Physics, University of Hamburg, D-20355 Hamburg, Germany, ou_persistent22              
3International Max Planck Research School for Ultrafast Imaging & Structural Dynamics (IMPRS-UFAST), Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266714              

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Free keywords: PACS numbers: 32.80.Rm, 32.30.Jc, 31.15.A−
 Abstract: We present an extension of the time-dependent configuration-interaction singles (TDCIS) method to the computation of the electron kinetic-energy spectrum in photoionization processes. Especially for strong and long ionizing light pulses, the detection of the photoelectron poses a computational challenge because propagating the outgoing photoelectron wave packet requires large grid sizes. Two different methods that allow for the extraction of the asymptotic photoelectron momentum are compared regarding their methodological and computational performance. The first method follows the scheme of Tong et al. [X. M. Tong, K. Hino, and N. Toshima, Phys. Rev. A 74, 031405(R) (2006)], where the photoelectron wave function is absorbed by a real splitting function. The second method following that presented by Tao and Scrinzi [L. Tao and A. Scrinzi, New J. Phys. 14, 013021 (2012)], measures the flux of the electron wave packet through a surface at a fixed radius. With both methods the full angle- and energy-resolved photoelectron spectrum is obtained. Combined with the TDCIS scheme, it is possible to analyze the dynamics of the outgoing electron in a channel-resolved way and, additionally, to study the dynamics of the bound electrons in the parent ion. As an application, one-photon and above-threshold ionization of argon following strong XUV irradiation are studied via energy- and angle-resolved photoelectron spectra.

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Language(s): eng - English
 Dates: 2014-02-062014-03-132014-03
 Publication Status: Published in print
 Pages: 10
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1103/PhysRevA.89.033415
arXiv: 1403.0352
 Degree: -

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Title: Physical Review A
  Other : Phys. Rev. A
  Other : Physical Review A: Atomic, Molecular, and Optical Physics
Source Genre: Journal
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Publ. Info: New York, NY : American Physical Society
Pages: - Volume / Issue: 89 (3) Sequence Number: 033415 Start / End Page: - Identifier: ISSN: 1050-2947
CoNE: /journals/resource/954925225012_2