Accession Number : AD0694084

Title :   THE DOUBLE OPTICAL RESONANCE SPECTRA OF ORGANIC AND INORGANIC MOLECULES.

Descriptive Note : Final rept.,

Corporate Author : MICHIGAN UNIV ANN ARBOR DEPT OF CHEMISTRY

Personal Author(s) : Dunn,Thomas M. ; Francis,Anthony H.

Report Date : 04 SEP 1969

Pagination or Media Count : 32

Abstract : Double optical resonance spectra (DOR spectra) of the triplet state were obtained with great ease in the case of the aromatic hydrocarbons naphthalene and anthracene as well as from the halogenated derivatives alpha-chloro and alpha-bromonaphthalene. The lowest triplet state lifetime of these substances ranges from 2.6 seconds in the case of naphthalene to 18 milliseconds in the case of alpha-bromanaphthalene and no difficulty of any kind was experienced in obtaining good vibrational structure when these substances are dissolved in glassy solvents of the type of EPA. The inorganic ions of Cr(3+), Ni(2+), Tl(+) and Mn(2+) in a variety of physical conditions, i.e., both pure materials and as doped ions in host lattices, were also examined, but in no case was sharp vibrational structure, or even very well developed DOR spectra, observed. Results were limited to bleaching, which was observed in a number of these materials, and this has been previously reported, but the intensity of the bleaching and its rather diffuse form prompted a re-examination of the physical conditions being used in the experimental approach. (Author)

Descriptors :   (*ANTHRACENES, *PHOSPHORESCENCE), (*NAPHTHALENES, PHOSPHORESCENCE), (*TRANSITION METALS, PHOSPHORESCENCE), OPTICAL PUMPING, CHLORINE COMPOUNDS, IODINE COMPOUNDS, HALOGENATED HYDROCARBONS, EXCITATION, ULTRAVIOLET SPECTRA, VISIBLE SPECTRA, ELECTRON TRANSITIONS, CHROMIUM COMPOUNDS, NICKEL COMPOUNDS, TANTALUM COMPOUNDS, MANGANESE COMPOUNDS

Subject Categories : Lasers and Masers
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE