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Profile of resonant photoelectron spectra versus the spectral function width and photon frequency detuning

Feifel, R; Kimberg, V; Baev, A; Gel'mukhanov, F; Agren, H; Miron, C; Ohrwall, G; Piancastelli, MN; Ristinmaa Sörensen, Stacey LU and Karlsson, L, et al. (2004) In Physical Review A (Atomic, Molecular and Optical Physics) 70(3).
Abstract
The outermost, singly ionized valence state of N-2, the X (2)Sigma(g)(+) state, is investigated in detail as a function of the photon frequency bandwidth for core excitation to the N 1s-->pi(*) resonance, where the photon frequency is tuned in between the first two vibrational levels of this bound intermediate electronic state. We find a strong, nontrivial dependence of the resulting resonant photoemission spectral profile on the monochromator function width and the frequency of its peak position. For narrow bandwidth excitation we observe a well resolved vibrational fine structure in the final electron spectrum, which for somewhat broader bandwidths gets smeared out into a continuous structure. For even broader monochromator... (More)
The outermost, singly ionized valence state of N-2, the X (2)Sigma(g)(+) state, is investigated in detail as a function of the photon frequency bandwidth for core excitation to the N 1s-->pi(*) resonance, where the photon frequency is tuned in between the first two vibrational levels of this bound intermediate electronic state. We find a strong, nontrivial dependence of the resulting resonant photoemission spectral profile on the monochromator function width and the frequency of its peak position. For narrow bandwidth excitation we observe a well resolved vibrational fine structure in the final electron spectrum, which for somewhat broader bandwidths gets smeared out into a continuous structure. For even broader monochromator bandwidths, it converts again into a well resolved vibrational progression. In addition, spectral features appearing below the adiabatic transition energy of the ground state of N-2(+) are observed for broadband excitation. A model taking into account the interplay of the partial scattering cross section with the spectral function is presented and applied to the X (2)Sigma(g)(+) final state of N-2(+). (Less)
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organization
publishing date
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Contribution to journal
publication status
published
subject
in
Physical Review A (Atomic, Molecular and Optical Physics)
volume
70
issue
3
publisher
American Physical Society (APS)
external identifiers
  • wos:000224623000077
  • scopus:20844433040
ISSN
1050-2947
DOI
10.1103/PhysRevA.70.032708
language
English
LU publication?
yes
id
d4511318-9f38-416f-bcbc-d2c71e7f7a23 (old id 262675)
date added to LUP
2007-10-22 14:01:44
date last changed
2017-01-01 04:51:26
@article{d4511318-9f38-416f-bcbc-d2c71e7f7a23,
  abstract     = {The outermost, singly ionized valence state of N-2, the X (2)Sigma(g)(+) state, is investigated in detail as a function of the photon frequency bandwidth for core excitation to the N 1s-->pi(*) resonance, where the photon frequency is tuned in between the first two vibrational levels of this bound intermediate electronic state. We find a strong, nontrivial dependence of the resulting resonant photoemission spectral profile on the monochromator function width and the frequency of its peak position. For narrow bandwidth excitation we observe a well resolved vibrational fine structure in the final electron spectrum, which for somewhat broader bandwidths gets smeared out into a continuous structure. For even broader monochromator bandwidths, it converts again into a well resolved vibrational progression. In addition, spectral features appearing below the adiabatic transition energy of the ground state of N-2(+) are observed for broadband excitation. A model taking into account the interplay of the partial scattering cross section with the spectral function is presented and applied to the X (2)Sigma(g)(+) final state of N-2(+).},
  articleno    = {032708},
  author       = {Feifel, R and Kimberg, V and Baev, A and Gel'mukhanov, F and Agren, H and Miron, C and Ohrwall, G and Piancastelli, MN and Ristinmaa Sörensen, Stacey and Karlsson, L and Svensson, S},
  issn         = {1050-2947},
  language     = {eng},
  number       = {3},
  publisher    = {American Physical Society (APS)},
  series       = {Physical Review A (Atomic, Molecular and Optical Physics)},
  title        = {Profile of resonant photoelectron spectra versus the spectral function width and photon frequency detuning},
  url          = {http://dx.doi.org/10.1103/PhysRevA.70.032708},
  volume       = {70},
  year         = {2004},
}