The complex Kohn and polyatomic Schwinger variational techniques have been employed to illustrate the interchannel coupling correlation effects in the valence photoionization dynamics of SF6. Partial photoionization cross sections and asymmetry parameters of six valence subshells (1t1g, 5t1u, 1t2u, 3eg, 1t2g, 4t1u) are discussed in the framework of several theoretical and experimental studies. The complex Kohn results are in rather good agreement with experimental results, indicative of the fact that the interchannel coupling effects alter the photoionization dynamics significantly. We find that the dominant effect of interchannel coupling is to reduce the magnitude of shape resonant cross sections near the threshold and to induce resonant features in other channels to which resonances are coupled. The long-standing issue concerning ordering of the valence orbitals is addressed and confirmed 4t1u61t2g63eg4(5t1u6+1t2u6) 1t1g6 as the most likely ordering.
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28 May 2014
Research Article|
May 22 2014
Interchannel coupling effects in the valence photoionization of SF6
J. Jose;
J. Jose
1Department of Chemistry,
Texas A&M University
, College Station, Texas 77843, USA
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R. R. Lucchese;
R. R. Lucchese
a)
1Department of Chemistry,
Texas A&M University
, College Station, Texas 77843, USA
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T. N. Rescigno
T. N. Rescigno
2Lawrence Berkeley National Laboratory,
Chemical Sciences
, Berkeley, California 94720, USA
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a)
Electronic mail: lucchese@mail.chem.tamu.edu
J. Chem. Phys. 140, 204305 (2014)
Article history
Received:
March 08 2014
Accepted:
May 02 2014
Citation
J. Jose, R. R. Lucchese, T. N. Rescigno; Interchannel coupling effects in the valence photoionization of SF6. J. Chem. Phys. 28 May 2014; 140 (20): 204305. https://doi.org/10.1063/1.4876576
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