THERMOLUMINESCENCE AND OTHER OPTICAL STUDIES ON SOME THALLIUM DOPED ALKALI SULFATE PHOSPHORS

Authors
KUMAR VSK ACHARYULU BSVSR SASTRY SBS
Citation
Vsk. Kumar et al., THERMOLUMINESCENCE AND OTHER OPTICAL STUDIES ON SOME THALLIUM DOPED ALKALI SULFATE PHOSPHORS, Radiation effects and defects in solids, 127(2), 1993, pp. 215-224
Citations number
18
Categorie Soggetti
Physics, Condensed Matter","Nuclear Sciences & Tecnology
Journal title
Radiation effects and defects in solids → ACNP
ISSN journal
10420150
Volume
127
Issue
2
Year of publication
1993
Pages
215 - 224
Database
ISI
SICI code
1042-0150(1993)127:2<215:TAOOSO>2.0.ZU;2-F
Abstract
Results of thermoluminescence, optical absorption and fluorescence stu dies on thallium doped sulphates of cesium, rubidium and potassium are reported. The C band of Tl+ is observed in the 5.77-5.85 eV region. F luorescent emissions from the P-3(1,0) levels are observed by excitati on into the C and A bands. Tl+ acts as an electron trap during gamma-i rradiation. The hole centres formed during irradiation recombine with Tl0 during heating to give thermoluminescence. The TL emission spectra and the fluorescence spectra are similar indicating that the process of emission is the same in both cases.