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Geometrical information on core-excited states obtained from interference quenching of vibrational states in resonant x-ray photoemission

Baev, A; Feifel, R; Gel'mukhanov, F; Agren, H; Piancastelli, MN; Bassler, M; Miron, C; Ristinmaa Sörensen, Stacey LU ; de Brito, AN and Bjorneholm, O, et al. (2003) In Physical Review A (Atomic, Molecular and Optical Physics) 67(2: 022713).
Abstract
An interference quenching of the m=1 final state vibrational line in the resonant Auger decay of N 1s-->pi(*) core-excited N-2 is observed and analyzed. The intensity ratio between the m=1 and m=0 vibrational levels of the X (2)Sigma(g)(+) final state shows a surprising nonmonotonic variation as a function of frequency detuning, going through a minimum with a complete suppression of m=1. We have developed a simple model which indicates a linear relation between the value of the detuning frequency for this minimum and the equilibrium bond distance of the core-excited state. This implies the possibility of determining the equilibrium bond distances for core-excited states to a high degree of accuracy. Simultaneously with the simple model... (More)
An interference quenching of the m=1 final state vibrational line in the resonant Auger decay of N 1s-->pi(*) core-excited N-2 is observed and analyzed. The intensity ratio between the m=1 and m=0 vibrational levels of the X (2)Sigma(g)(+) final state shows a surprising nonmonotonic variation as a function of frequency detuning, going through a minimum with a complete suppression of m=1. We have developed a simple model which indicates a linear relation between the value of the detuning frequency for this minimum and the equilibrium bond distance of the core-excited state. This implies the possibility of determining the equilibrium bond distances for core-excited states to a high degree of accuracy. Simultaneously with the simple model we present a strict theory of the studied effect. This strict theory allows us to explore the accuracy of determining the bond length of the core-excited state from resonant Auger spectra. We obtain a weak influence of the core-hole lifetime on the determined bond length, whereas the number of intermediate vibrational states accounted for in the numerical simulations seems to be quite important. (Less)
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publication status
published
subject
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Physical Review A (Atomic, Molecular and Optical Physics)
volume
67
issue
2: 022713
publisher
American Physical Society
external identifiers
  • wos:000181361200070
  • scopus:0037964130
ISSN
1050-2947
DOI
10.1103/PhysRevA.67.022713
language
English
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yes
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c9cfb9f0-22db-494a-9d34-4cc407f53011 (old id 317195)
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2007-08-22 14:37:11
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2018-05-29 09:58:17
@article{c9cfb9f0-22db-494a-9d34-4cc407f53011,
  abstract     = {An interference quenching of the m=1 final state vibrational line in the resonant Auger decay of N 1s-->pi(*) core-excited N-2 is observed and analyzed. The intensity ratio between the m=1 and m=0 vibrational levels of the X (2)Sigma(g)(+) final state shows a surprising nonmonotonic variation as a function of frequency detuning, going through a minimum with a complete suppression of m=1. We have developed a simple model which indicates a linear relation between the value of the detuning frequency for this minimum and the equilibrium bond distance of the core-excited state. This implies the possibility of determining the equilibrium bond distances for core-excited states to a high degree of accuracy. Simultaneously with the simple model we present a strict theory of the studied effect. This strict theory allows us to explore the accuracy of determining the bond length of the core-excited state from resonant Auger spectra. We obtain a weak influence of the core-hole lifetime on the determined bond length, whereas the number of intermediate vibrational states accounted for in the numerical simulations seems to be quite important.},
  articleno    = {022713},
  author       = {Baev, A and Feifel, R and Gel'mukhanov, F and Agren, H and Piancastelli, MN and Bassler, M and Miron, C and Ristinmaa Sörensen, Stacey and de Brito, AN and Bjorneholm, O and Karlsson, L and Svensson, S},
  issn         = {1050-2947},
  language     = {eng},
  number       = {2: 022713},
  publisher    = {American Physical Society},
  series       = {Physical Review A (Atomic, Molecular and Optical Physics)},
  title        = {Geometrical information on core-excited states obtained from interference quenching of vibrational states in resonant x-ray photoemission},
  url          = {http://dx.doi.org/10.1103/PhysRevA.67.022713},
  volume       = {67},
  year         = {2003},
}