✦ LIBER ✦

Fluorescence decay of pyrene vapour; biphotonic excitation and the kinetics of vibrational redistribution

✍ Scribed by C.J. Werkhoven; T. Deinum; J. Langelaar; R.P.H. Rettschnick; J.D.W. van Voorst

Publisher: Elsevier Science
Year: 1973
Tongue: English
Weight: 431 KB
Volume: 18
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(73)80411-7

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✦ Synopsis

A computer simu!ation procedure has been applied to the fluorescence decay curves of pyrenc vapour, excited into the S, s?ate with short laser pulses. The resuits confirm that the kinetic model which has been used previously in order to describe the effect of vibrational redistribution on the fluorexence decay, is consis!cnt with the esperimentaI decay curves. A very sSort decay component (7 -^i 4 nscc) which appears whcr. the energy of the laser exceeds t.5 mJ is ascribed to doubly excited pyrene molecules.

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