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A Stationary State Approach to Radiationless Transitions: Radiation Bandwidth Effect on Excitation Processes in Polyatomic Molecules
William Rhodes, Bryan R. Henry and Michael Kasha
Proceedings of the National Academy of Sciences of the United States of America
Vol. 63, No. 1 (May 15, 1969), pp. 31-35
Published by: National Academy of Sciences
Stable URL: http://www.jstor.org/stable/59212
Page Count: 5
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Excitation processes associated with photon absorption by a molecule are considered in terms of the stationary states of the molecule and the bandwidth of the incident radiation. The conditions of validity of the usual interpretation that transitions occur to excited Born-Oppenheimer states followed by radiationless transitions to other B-O states are examined in terms of the various correlation and relaxation times of the system. In contrast to the usual case, for sufficiently narrow radiation bandwidths, it is demonstrated that excitation should be regarded as occurring to molecular stationary states.
Proceedings of the National Academy of Sciences of the United States of America © 1969 National Academy of Sciences