Investigation on Comparative Optical Absorption and Luminescent Property of Cerium Doped Potassium Halide Single Crystals
The comparison of Optical absorption, Photoluminescence (PL), Thermoluminescence (TL) and other optical studies of X-ray irradiated Ce 3+ doped KBr and KI single crystals were discussed. Photoluminescence of these crystals exhibits characteristic Ce 3+ emission due to 5d-4f transition in both the studied material in addition to the host emission. Optical absorption and PL studies confirm the presence of Cerium ions in the trivalent state in both KBr and KI host .The characteristic emission due to Ce 3+ ions in the spectral distribution under optically stimulated emission and TL emission confirms the participation of Cerium ions in the recombination process in both host material. Trap parameters for the TL process are calculated and compared.
Thermoluminescence of solids
Preface 1. Introduction 2. Theoretical background 3. Thermoluminescence analysis 4. Additional factors governing thermoluminescence 5. Defects and thermolumienscence 6. Thermoluminescence dosimetry (TLD) 7. Thermoluminescence dating 8. Geological applications 9. Instrumentation Appendices References Index.
The distribution of 54-Mn in the enamel and dentine of the rat incisor.
Abstract The distribution of 54 Mn was studied in the lower incisors of rats. Autoradiograms show 54 Mn to be present in the enamel and dentine 5, 10 and 15 days after its administration. In the dentine, the radioisotope is first localized in a zone near to and encircling the pulp and later becomes more diffuse. Pre-existing as well as the newly formed enamel incorporates the isotope. In both enamel and dentine 54 Mn appears to be principally associated with the inorganic portion.