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Title: Dynamics of oxygen Rydberg atom generation following O 1s inner-shell excitation of H{sub 2}O

The emission of low-energy electrons from H{sub 2}O has been investigated at photon excitation energies in the vicinity of the O 1s ionization threshold. Neutral oxygen Rydberg atoms (O*) were found to form, and the correlation between the initial inner-shell excited state of H{sub 2}O and the Rydberg state of O* was determined. The initially excited electron in a Rydberg orbital is shown to remain associated with O* even after the cleavage of two O-H bonds. We also show that the energy discrepancy between two Rydberg states of H{sub 2}O and O* can be explained by the influence of the post-collision interaction, which becomes stronger as the excitation energy approaches the 1s ionization threshold.
Authors:
; ;  [1] ;  [2] ;  [3] ;  [4] ;  [5]
  1. University of Hyogo, Koto 3-2-1, Kamigori-cho, Ako-gun, Hyogo 678-1297 (Japan)
  2. Hiroshima University, 2-2 Kagamiyama 1-chome, Higashihiroshima 739-8512 (Japan)
  3. UVSOR Facility, Institute for Molecular Science, 38 Nishigo-Naka, Myodaiji, Okazaki 444-8585 (Japan)
  4. Department of Environmental Science, Niigata University, 8050, Ikarashi 2-no-cho, Nishi-ku, Niigata 950-2181 (Japan)
  5. JASRI, Koto 1-1-1, Sayo-cho, Hyogo 679-5198 (Japan)
Publication Date:
OSTI Identifier:
22304231
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 140; Journal Issue: 21; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ATOMS; CLEAVAGE; COLLISIONS; ELECTRONS; EMISSION; INNER-SHELL EXCITATION; INTERACTIONS; OXYGEN; PHOTONS; RYDBERG STATES; WATER