Time-of-flight mass spectroscopy was used to study the relaxation dynamics of HCl following photoexcitation in the vicinity of the Cl K edge (~2.8 keV) using monochromatic synchrotron radiation. At the lowest resonant excitation to the 6ơ* antibonding orbital, almost half of the excited molecules decay by emission of a neutral H atom, mostly in coincidence with a highly charged Cln1 ion. The present work demonstrates that neutral-atom emission can be a significant decay channel for excited states with very short lifetimes (1 fs). [S1050-2947(98)03604-X]
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Copyright American Physical Society, used with permission
Hansen, D. L.,
Fisher, G. R.,
Leung, K. T.,
Perera, R. C.,
Sellin, I. A.,
Whitfield, S. B.
Neutral Dissociation of Hydrogen Following Photoexcitation of HCl at the Chlorine K Edge.
Physical Review A, 57(4),
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