Accession Number : AD0697982

Title :   OPTICAL AND ELECTRON SPIN RESONANCE STUDIES OF FOURTH NEAREST NEIGHBOR CHROMIUM ION PAIRS IN RUBY.

Descriptive Note : Technical rept.,

Corporate Author : CALIFORNIA UNIV SANTA CRUZ DIV OF NATURAL SCIENCES

Personal Author(s) : Scott,Peter L. ; Berggren,M. J. ; Imbusch,G. F.

Report Date : NOV 1969

Pagination or Media Count : 31

Abstract : The fine structure of the optical fluorescence spectrum arising from the fourth nearest neighbor chromium ion pair system in ruby was studied using high resolution optical spectroscopy, ordinary electron spin resonance, and optically detected electron spin resonance. The ground state energy levels of this system are found to be describable by a simple spin Hamiltonian where the directions of the symmetry axes, D(s), and E(s) each depend on the spin S in a predictable way, requiring only two adjustable parameters: D(c) (the usual second order crystal field term of axial symmetry), and D(e) (a similar term arising from the anisotropic exchange interaction). A phonon-assisted energy transfer mechanism is postulated to account for the existence of the optically detected spin resonance spectrum. (Author)

Descriptors :   (*CHROMIUM, MOLECULAR ENERGY LEVELS), (*RUBY, *MOLECULAR ENERGY LEVELS), (*ELECTRON PARAMAGNETIC RESONANCE, RUBY), HAMILTONIAN, GROUND STATE, ZEEMAN EFFECT, PHONONS

Subject Categories : Atomic and Molecular Physics and Spectroscopy
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE