Accession Number : AD0640612

Title :   DIRECT EVIDENCE FOR AND TRANSITION RATES OF ION PAIR INTERACTIONS IN LAC13:HO3+,

Corporate Author : CARLYLE BARTON LAB JOHNS HOPKINS UNIV BALTIMORE MD

Personal Author(s) : Porter,J. F. , Jr. ; Moos,H. W.

Report Date : 1966

Pagination or Media Count : 27

Abstract : Energy transfer between Ho(3+) ions in a LaC13 lattice was studied by means of relative fluorescence intensity measurements. By careful measurements of the relative fluorescence from E(5S2), C5I4), and Y(5I7) it was demonstrated that to within the experimental error, E relaxes to C only by an ion pair process. The concentration dependence of the pair process is linear. Assuming a simple model with a sharp radial drop off, an effective range of 7.5A (3rd nearest neighbor) was found for the ion pair interaction. (Author)

Descriptors :   (*FLUORESCENCE, HOLMIUM), (*HOLMIUM, *ATOMIC ENERGY LEVELS), (*LANTHANUM COMPOUNDS, CHLORIDES), CRYSTAL LATTICES, IMPURITIES, IONS, EXCITATION, ELECTRON TRANSITIONS

Subject Categories : Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE