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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/6912

Title: Radiation effect on the luminescence of LiYF4 : Er3+
Authors: DESHPANDE, SP
DHOBLE, SJ
POKALE, WK
DESHMUKH, BT
PODE, RB
GUNDURAO, TK
Keywords: nd-yag
er-3+
Issue Date: 1998
Publisher: ELSEVIER SCIENCE BV
Citation: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 134(3-4), 385-392
Abstract: Luminescence and also the effects of ionising radiation on luminescence have been investigated in LiYF4:Er. The defects created by ionising radiation are studied by means of Thermally Stimulated Luminescence (TSL) and Electron Spin Resonance (ESR). TSL studies indicate a prominent glow peak at 386-412 K, whose position is found to depend on the radiation dose. Two defect centres, tentatively assigned to F-centres, are observed at room temperature. Step annealing measurements suggest a connection between these centres and the TSL glow peak. Photoluminescence studies indicate considerable reduction in emission intensity which appears to arise from the distortion of the lattice around the Er3+ ion caused by the defect centres. An explanation of the observations is suggested on the basis of impurity ion-defect centre formation. (C) 1998
URI: http://dx.doi.org/10.1016/S0168-583X(97)00732-5
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6912
http://hdl.handle.net/10054/6912
ISSN: 0168-583X
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