TY - JOUR
T1 - Application of an atomic relaxation model for the interpretation of O1s to Rydberg excited Auger electron spectra of molecular oxygen
AU - Sorensen, S.
AU - Tanaka, T.
AU - Feifel, Raimund
AU - Eland, J. H.D.
AU - Kitajima, M.
AU - Tanaka, H.
AU - Sankari, R.
AU - De Fanis, A.
AU - Piancastelli, M. N.
AU - Karlsson, L.
AU - Ueda, K.
N1 - Funding Information:
Professor Kai Siegbahn is greatly acknowledged for valuable comments on the manuscript. The experiment was carried out with the approval of the SPring-8 program review committee and was partly supported by the Japan Society of the Promotion of Science (JSPS) in the form of Grants-in-Aid for Scientific Research. S.L.S. is grateful to the Swedish Foundation for Strategic Research (SSF) and the Swedish Research Council (VR). R.F. would like to thank the Swedish Research Council (VR) and the Swedish Foundation for International Cooperation in Research and Higher Education (STINT) for financial support during his stay at Oxford University. The staff of Spring-8 is greatly acknowledged for providing an excellent experimental facility.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2004/11/1
Y1 - 2004/11/1
N2 - Resonant and normal Auger electron spectra associated with an O1s initial vacancy of the O 2 molecule have been recorded using photon energies of 541.80, 541.97 and 650 eV. The resonant Auger spectra obtained at 541.80 and 541.97 eV are interpreted as composed essentially of two characteristic parts, one between 10 and 35 eV binding energy reminiscent to direct photoionisation, and another, above 35 eV, associated primarily with spectator decay of the intermediate core-hole state. The spectra above 35 eV owe some similarity to the ordinary Auger electron spectrum recorded at 650 eV, and an interpretation is made in terms of Rydberg series in the cation converging towards the dicationic ionisation limits. The interpretation is based on a relaxation model introduced earlier for atomic resonant Auger spectra. The assignments of the resonant spectra assume that the relevant intermediate neutral states at 541.80 and 541.97 eV governing the Auger decay are essentially the v = 0 and 1 vibrational components of the (O1s)-1 (4 ∑u-) 4pσ Rydberg state. Arguments for this interpretation are given.
AB - Resonant and normal Auger electron spectra associated with an O1s initial vacancy of the O 2 molecule have been recorded using photon energies of 541.80, 541.97 and 650 eV. The resonant Auger spectra obtained at 541.80 and 541.97 eV are interpreted as composed essentially of two characteristic parts, one between 10 and 35 eV binding energy reminiscent to direct photoionisation, and another, above 35 eV, associated primarily with spectator decay of the intermediate core-hole state. The spectra above 35 eV owe some similarity to the ordinary Auger electron spectrum recorded at 650 eV, and an interpretation is made in terms of Rydberg series in the cation converging towards the dicationic ionisation limits. The interpretation is based on a relaxation model introduced earlier for atomic resonant Auger spectra. The assignments of the resonant spectra assume that the relevant intermediate neutral states at 541.80 and 541.97 eV governing the Auger decay are essentially the v = 0 and 1 vibrational components of the (O1s)-1 (4 ∑u-) 4pσ Rydberg state. Arguments for this interpretation are given.
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U2 - 10.1016/j.cplett.2004.09.048
DO - 10.1016/j.cplett.2004.09.048
M3 - Article
AN - SCOPUS:6044242222
VL - 398
SP - 168
EP - 174
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 1-3
ER -