Premium
Emission Processes in Luminescence and Thermally Stimulated Luminescence of Ag‐ and Ca‐Doped KCl
Author(s) -
Bhuniya R. C.,
Sridaran P.,
Ratnam V. V.
Publication year - 1985
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.2221290133
Subject(s) - luminescence , impurity , recombination , doping , analytical chemistry (journal) , wavelength , materials science , irradiation , excitation , thermoluminescence , excitation wavelength , emission spectrum , chemistry , optoelectronics , spectral line , physics , biochemistry , organic chemistry , chromatography , quantum mechanics , astronomy , nuclear physics , gene
Luminescent emission during X‐ray excitation at room temperature and above as well as during TSL glow is studied for KCl, undoped and doped with Ag and Ca. It is observed that the spectral character of the emission is the same during both the processes in each of the crystals. In all the samples certain emissions occur at the same wavelength region, (I) 540 to 560 nm, (II) 430 to 445 nm, (III) 420 to 430 nm, and (IV) 385 to 410 nm during X‐irradiation and during TSL glow irrespective of the impurities present, which are intrinsic to the lattice. Emissions in the wavelength regions (V) 280 to 290 nm, (VI) 260 to 270 nm, and (VII) 580 to 620 nm are characteristic of Ag impurity. Recombination centres and recombination sites of the different emissions are explained.