Accession Number : ADP011927


Title :   Radio- and VUV - Excited Luminescence of YAP:Ce, YAP:Pr and YAG:Pr


Descriptive Note : Conference proceedings


Corporate Author : INSTITUTE OF ELECTRONIC MATERIALS TECHNOLOGY WARSAW (POLAND)


Personal Author(s) : Wisniewska, M ; Wojtowicz, A J ; Lukasiewicz, T ; Frukacz, Z ; Galazka, Z


Full Text : http://www.dtic.mil/dtic/tr/fulltext/u2/p011927.pdf


Report Date : Jan 2001


Pagination or Media Count : 6


Abstract : In this Communication we report initial results of studies on X-ray and VUV excited luminescence of YAP and YAG crystals activated with Pr(3+), and YAP activated with Ce(3+). Excitation and luminescence spectra of Pr(3+) and Ce(3+) d-f and Pr(3+) f-f emissions and luminescence time profiles under pulsed synchrotron excitation are presented and analysed in order to identify and characterize various host-to-ion energy transfer channels. The results support the notion that direct and trap mediated capture and recombination of holes and electrons via Pr(3+) or Ce(3+) ions provide the dominant mechanism of radioluminescence production in both YAP and YAG crystals.


Descriptors :   *YTTRIUM ALUMINUM GARNET , *EXCITATION , *SINGLE CRYSTALS , *CERIUM , *VACUUM ULTRAVIOLET RADIATION , *PRASEODYMIUM , *RADIOLUMINESCENCE , SYMPOSIA , PRODUCTION , HOLES(ELECTRON DEFICIENCIES) , ENERGY TRANSFER , ELECTRONS , PROFILES , PULSES , RECOMBINATION REACTIONS , LUMINESCENCE , RARE EARTH COMPOUNDS , ELECTRON TRANSFER , POLAND , SYNCHROTRONS


Subject Categories : Inorganic Chemistry
      Crystallography
      Optics


Distribution Statement : APPROVED FOR PUBLIC RELEASE