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Redox reactions, radio-photoluminescence and thermoluminescence in CaSO4:Eu

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Title Redox reactions, radio-photoluminescence and thermoluminescence in CaSO4:Eu
 
Creator NAIR, SR
KONDAWAR, VK
UPADEO, SV
MOHARIL, SV
GUNDURAO, TK
 
Subject electron-spin-resonance
single-crystals
doped caso4
luminescence
mechanisms
europium
phosphor
dy
 
Description CaSO4:RE phosphors find applications in dosimetry of ionizing radiations. Phosphors having Dy:or Tm activators are high-sensitivity thermoluminescence dosimetry materials, while the phosphors with Eu or Sm activators are the proposed materials for radio-photoluminescence dosimetry. Mechanisms of several processes related to various luminescence phenomena, however, are not yet properly understood. Usually, all CaSO4:RE phosphors are prepared under identical conditions and comparative studies are carried out. It is shown here that the form in which the impurity is incorporated and the nature of defects produced is quite different in CaSO4:Eu than in CaSO4:Dy. The results presented throw light on the mechanism for thermoluminescence, radio-photoluminescence, incorporation of the impurity and Eu3+ , Eu2+ conversion.
 
Publisher IOP PUBLISHING LTD
 
Date 2011-08-04T00:01:07Z
2011-12-26T12:54:27Z
2011-12-27T05:42:21Z
2011-08-04T00:01:07Z
2011-12-26T12:54:27Z
2011-12-27T05:42:21Z
1997
 
Type Article
 
Identifier JOURNAL OF PHYSICS-CONDENSED MATTER, 9(39), 8307-8323
0953-8984
http://dx.doi.org/10.1088/0953-8984/9/39/015
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9179
http://hdl.handle.net/10054/9179
 
Language en