The identification of two entrance channels in the reaction of metastable helium He(23S,21S) with SO2 |
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| Authors: | Wolfgang Goy Harald Morgner Andrew J Yencha |
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| Institution: | Fakultät für Physik der Universität Freiburg, Hermann Herder Strasse 3, D-7800 Freiburg W. Germany;Department of Physics and Department of Chemistry, State University of New York at Albany, Albany, NY 12 222 U.S.A. |
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| Abstract: | The energy spectrum of electrons emitted in the reaction of He(23S) and He(21S) with SO2 indicates that in addition to the covalent entrance channel a strongly attractive ionic channel plays a role. We find upper limits for the well depth of the potential curve that corresponds to the latter channel of De ? 3.5 eV and De ? 4.3 eV for He(23S) and He(21S) as the reaction partner, respectively. The partitioning between the two entrance channels can be understood by assuming the coupling matrix between both channels to depend strongly on the orientation of the SO2 molecule with respect to the incident metastable He*. |
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| Keywords: | To whom correspondence should be addressed |
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