Journal ArticleDOI
Studies on Thermoluminescence Property of Thoria Ceramics
TLDR
In this paper, the authors investigated the thermoluminescence behavior of sintered thoria samples with respect to bulk density, sintering atmosphere and the radiation dose, and found that the glow curves have peaks around 100°, 146°, 215° and 266°C with 215°C as the most intense one.Abstract:
The phenomenon of thermoluminescence has been frequently employed to obtain information concerning the defects in ionic solids. Present paper reports the results of an investigation on thermoluminescence behaviour of sintered thoria samples with respect to bulk density, sintering atmosphere and the radiation dose.TL glow curves have peaks around 100°, 146°, 215° and 266°C with 215°C as the most intense one. Intensity as well as peak resolution improved with density. All the peaks are found to saturate at about the same γ-radiation dose. Emission centres are assigned to be associated with the variable valence transition metal impurities unintentionally incorporated in ThO2 lattice.read more
Citations
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Journal ArticleDOI
Defect interactions and TL behaviour in thoria
D.D. Upadhyaya,C.M. Sunta +1 more
TL;DR: In this article, the defect-impurity interactions in thoria were studied as a function of ceramic fabrication variables employing TL as a probe, and the defect impurity interactions also influenced thermoluminescent properties of the material.
References
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Journal ArticleDOI
CHARGE CONVERSION OF IRRADIATED RARE-EARTH IONS IN CaF$sub 2$. II. THERMOLUMINESCENT SPECTRA.
J. L. Merz,Peter S. Pershan +1 more
TL;DR: In this article, high-resolution emission spectra are observed for individual glow peaks from all the lanthanide ions in Ca${\mathrm{F}}_{2}, where the crystals are irradiated with x rays (or $\ensuremath{\gamma}$ rays) at 77.
Journal ArticleDOI
Charge conversion of irradiated rare-earth ions in calcium fluoride. i.
J. L. Merz,Peter S. Pershan +1 more
TL;DR: The mechanism by which rare-earth ions in Ca${\mathrm{F}}_{2}$ can be reduced from the trivalent to the divalent state by exposure to x rays or $\ensuremath{\gamma}$ rays has been systematically studied for all the thirteen available ions in the lanthanide series as discussed by the authors.
Journal ArticleDOI
ELECTRONIC DEFECT STRUCTURE OF SINGLE-CRYSTAL ThO$sub 2$ BY THERMOLUMINESCENCE.
Elward T. Rodine,Peter L. Land +1 more
TL;DR: In this article, thermoluminescence (TL) and EPR measurements on a number of rare-earth-doped and undoped single crystals from various sources were used to analyze photoelectronic processes.
Journal ArticleDOI
Kinetics and trapping parameters of thermoluminescence in LiF TLD-100-dependence on dose
S P Kathuria,C M Sunta +1 more
TL;DR: In this article, the authors demonstrate that the order of kinetics of the TL process can change with the dose received by a sample, and that the activation energies E of the two peaks are determined using peak shape, and initial rise methods.
Journal ArticleDOI
Growth and properties of ceo2 and tho2 single crystals
TL;DR: In this article, the growth and properties of CeO 2 and ThO 2 single crystals were studied to make these materials available for lasers and other optical components, and two growth morphologies were found to exist which depended on flux composition.