Title :
Optical and luminescence properties of complex lead oxides
Author :
Kamenskikh, I.A. ; Kirm, M. ; Kolobanov, V.N. ; Mikhailin, V.V. ; Orekhanov, P.A. ; Shpinkov, I.N. ; Spassky, D.A. ; Vasil´ev, Andrey N. ; Zadneprovsky, B.I. ; Zimmerer, G.
Author_Institution :
Dept. of Phys., Lomonosov (M.V.) State Univ., Moscow, Russia
Abstract :
Reflectivity, luminescence and excitation spectra as well as nanosecond luminescence decay kinetics were measured for PbSO4 and PbCO3 (as well as CaCO3:Pb) by photon excitation between 4 and 35 eV. These measurements were compared to those of PbWO4 in order to establish the role of lead states in these compounds, which are potentially interesting as scintillators. New luminescence bands were observed in PbSO4 at 340 nm and in PbCO3 at 320 nm. Luminescence properties are discussed assuming the lead parentage of electronic states in the vicinity of the forbidden energy bandgap
Keywords :
calcium compounds; energy gap; lead; lead compounds; photoluminescence; reflectivity; time resolved spectra; 320 nm; 340 nm; 4 to 35 eV; CaCO3:Pb; PbCO3; PbSO4; PbWO4; complex lead oxides; electronic states; excitation spectra; forbidden energy bandgap; luminescence; nanosecond luminescence decay kinetics; reflectivity; scintillators; Crystals; Lead compounds; Luminescence; Nuclear electronics; Photonic band gap; Physics; Powders; Power engineering and energy; Reflectivity; Temperature distribution;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2000 IEEE
Conference_Location :
Lyon
Print_ISBN :
0-7803-6503-8
DOI :
10.1109/NSSMIC.2000.949110
