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# GATEWAY MEDIATED INTERSYSTEM CROSSING IN $C_{2}H_{2}$

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/19080

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 Title: GATEWAY MEDIATED INTERSYSTEM CROSSING IN $C_{2}H_{2}$ Creators: Cunningham, Kevin L.; Drucker, Stephen; Altunata, Selen; Morgan, Christopher G.; Field, R. W. Issue Date: 1998 Abstract: Recent Surface Electron Ejection by Laser-Excited Metastable (SEELEM) spectra have provided a clearer picture of the intersystem crossing of the $3\nu_{3}$ level of the $S_{1}$ surface of $C_{2}H_{2}$ to near-degenerate triplet states. The simultaneously recorded LIF and SEELEM spectra indicate that a single vibrational level of the $T_{3}$ surface couples the $3\nu_{3}$ level of the $S_{1}$ surface to a dense manifold of $T_{1}$ and $T_{2}$ states. This proposed coupling mechanism, Gateway Mediated Intersystem Crossing (GMISC), and other proposals will be discussed in light of the new data. URI: http://hdl.handle.net/1811/19080 Other Identifiers: 1998-TG-13