Vibronic relaxation in parabenzoquinone: Its effect on the decay rate of rotary spin echoes

We have observed that the decay rates of rotary spin echoes in the lowest triplet state T 0 of parabenzoquinone (PBQ) and toluquinone (TQ) increase exponentially with the temperature. The activation energy in TQ is equal to the trap depth but in PBQ it corresponds with the energy differences between...

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Bibliographic Details
Published in:Chemical physics letters 1975-12, Vol.36 (4), p.457-459
Main Authors: van 't Hof, C.A., Schmidt, J.
Format: Article
Language:English
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Summary:We have observed that the decay rates of rotary spin echoes in the lowest triplet state T 0 of parabenzoquinone (PBQ) and toluquinone (TQ) increase exponentially with the temperature. The activation energy in TQ is equal to the trap depth but in PBQ it corresponds with the energy differences between T 0 and a higher lying vibronic level T e. From the experimental data we obtain the rates for excitation to and decay from this excited vibronic level in PBQ.
ISSN:0009-2614
1873-4448
DOI:10.1016/0009-2614(75)80279-X