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Thermoluminescence, Fluorescence, and Optical Absorption Studies on Europium‐Doped Rubidium chloride
Author(s) -
Sastry S. B. S.,
Sapru S.
Publication year - 1981
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221030119
Subject(s) - thermoluminescence , europium , phosphor , analytical chemistry (journal) , fluorescence , irradiation , absorption (acoustics) , emission spectrum , quenching (fluorescence) , ion , materials science , doping , luminescence , rubidium , chemistry , optics , optoelectronics , spectral line , physics , organic chemistry , potassium , chromatography , astronomy , nuclear physics , metallurgy , composite material
Thermoluminescence, fluorescence, and optical absorption studies on Rbcl:Eu 2+ indicate that Eu 2+ ions convert to Eu 3+ on irradiation and gain the electron back on thermal or optical treatment. F Z1 centres are formed on bleaching and a glow peak attributable to these centres is identified. Fluorescence measurements give an emission around 3.0 eV and this emission is affected by irradiation and quenching of the sample. The integrated light intensity of these samples is quite high compared to undoped samples which indicates that this material may be a useful TLD phosphor. Spectral distribution of emission under various glow peaks shows emission bands around 1.5, 1.7, 1.9, 2.1, 2.8, and 3.0 eV. The high‐temperature glow peak shows an additional (weak) emission around 4.8 eV. A tentative energy band diagram is suggested showing the various emission processes.