Accession Number : AD0739349

Title :   Two-Level Fluorescence of Ovalene.

Descriptive Note : Technical rept.,

Corporate Author : CALIFORNIA UNIV SANTA BARBARA DEPT OF CHEMISTRY

Personal Author(s) : Johnson,P. C. ; Offen,H. W.

Report Date : MAR 1972

Pagination or Media Count : 15

Abstract : Ovalene fluorescence has been studied as a function of pressure (0-30 kbar) in condensed media at room and liquid nitrogen temperatures. The red shift of the alpha and p bands are 8/cm/kbar and 22/cm/kbar, respectively. The fluorescence kinetics is consistent with two-level emission; the greater pressure dependence of the lifetimes compared to the relative intensities being attributed to differential level shifts and its influence on the thermal population of the adjacent singlet levels. (Author)

Descriptors :   (*POLYCYCLIC COMPOUNDS, *FLUORESCENCE), PRESSURE, ELECTRON TRANSITIONS, MOLECULAR ENERGY LEVELS, RELAXATION TIME, ULTRAVIOLET SPECTRA, VISIBLE SPECTRA

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE