Accession Number : AD0693210

Title :   NEW SPECTROSCOPIC TECHNIQUES FOR STUDYING THE ORIGIN OF MOLECULAR PHOSPHORESCENCE.

Descriptive Note : Technical rept.,

Corporate Author : CALIFORNIA UNIV LOS ANGELES DEPT OF CHEMISTRY

Personal Author(s) : Tinti,D. S. ; El-Sayed,M. A.

Report Date : AUG 1969

Pagination or Media Count : 17

Abstract : New indirect techniques are discussed by which one can assign the zero-field level(s) from which the emission of vibronic bands in the spectrum originates. These methods are based on changing the relative populations of the zero-field levels and observing the corresponding changes in the relative intensity of the different vibronic bands at temperatures for which the electron spin-lattice relaxation processes between the zero-field levels are slower than or comparable to the radiative processes. These methods are applied to 2,3-dichloroquinoxaline. A summary of the interpretation of the results obtained and their correlation with theory is given in this paper, but the details of the work are not given. (Author)

Descriptors :   (*PHOSPHORESCENCE, *NITROGEN HETEROCYCLIC COMPOUNDS), MOLECULAR ENERGY LEVELS, ELECTRON TRANSITIONS, MAGNETIC FIELDS, MICROWAVES, POLARIZATION

Subject Categories : Radiation and Nuclear Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE