DSpace
 

DSpace at IIT Bombay >
IITB Publications >
Proceedings papers >

Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/100/1746

Title: Preparation, dosimetric characterisation and investigation of related TSL defect centres in Li3PO4 : Mg,Cu phosphor
Authors: BHATT, BC
DHABEKAR, BS
SANAYE, SS
SHINDE, SS
MOHARIL, SV
RAO, TKG
Issue Date: 2002
Publisher: NUCLEAR TECHNOLOGY PUBL
Citation: RADIATION PROTECTION DOSIMETRY,100,251-253
Abstract: Li3PO4:Mg,Cu, a low effective atomic number and high sensitivity TSL phosphor, has been prepared. Its TSL glow curve shows a major peak around 360degreesC with minor peaks around 110degreesC and 230degreesC. The optimum concentrations of the dopants are found to be 200 ppm each. Its gamma sensitivity is 1.2 times as compared to CaSO4:Dy (0.1 mol%). The Optimum Pre-irradiation annealing treatment is found to be 650degreesC, 15 min. Its PL emission shows a band at 370 nm with excitation band at 250 nm. Dose to TSL response shows that its response is linear up to the gamma dose of 100 Gy for irradiations carried out at RT. An irradiated sample shows a distinct new ESR signal, which is tentatively assigned to an electron/hole localised on one of the oxygen(s) of the phosphate group. Step annealing experiments show decay of the defect centre around 340degreesC. This correlates well with the TSL peak around 360degreesC.
URI: http://dspace.library.iitb.ac.in/xmlui/handle/10054/14906
http://hdl.handle.net/100/1746
ISSN: 0144-8420
Appears in Collections:Proceedings papers

Files in This Item:

There are no files associated with this item.

View Statistics

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback