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Radiation effect on the luminescence of LiYF4 : Er3+

DSpace at IIT Bombay

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Title Radiation effect on the luminescence of LiYF4 : Er3+
 
Creator DESHPANDE, SP
DHOBLE, SJ
POKALE, WK
DESHMUKH, BT
PODE, RB
GUNDURAO, TK
 
Subject nd-yag
er-3+
 
Description 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
 
Publisher ELSEVIER SCIENCE BV
 
Date 2011-07-26T13:12:18Z
2011-12-26T12:54:30Z
2011-12-27T05:42:27Z
2011-07-26T13:12:18Z
2011-12-26T12:54:30Z
2011-12-27T05:42:27Z
1998
 
Type Article
 
Identifier NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 134(3-4), 385-392
0168-583X
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
 
Language en