Skip Navigation


Radiation Protection Dosimetry Advance Access originally published online on August 20, 2008
Radiation Protection Dosimetry 2008 132(1):42-50; doi:10.1093/rpd/ncn215
This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow All Versions of this Article:
132/1/42    most recent
ncn215v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Lakshmanan, A. R.
Right arrow Articles by Annalakshmi, O.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Lakshmanan, A. R.
Right arrow Articles by Annalakshmi, O.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

© The Author 2008. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

High-sensitive CaSO4:Dy thermoluminescent phosphor synthesis by co-precipitation technique

A. R. Lakshmanan1,2,*, M. T. Jose1 and O. Annalakshmi1

1 Radiological Safety Division, Safety Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, Tamil Nadu, India

* Corresponding author: arunachalamlakshmanan{at}yahoo.com

Received May 17, 2008, amended July 16, 2008, accepted July 23, 2008

This paper describes the successful development of the co-precipitation technique for the preparation of a high-sensitive dysprosium-doped calcium sulphate (CaSO4:Dy) thermoluminescent dosimetry (TLD) phosphor with dosimetric glow peak at ~230°C which is a desired development in the field of radiation protection dosimetry. The main advantages of this co-precipitation technique over the conventional recrystallisation technique of phosphor preparation are: (i) preparation time is very less; (ii) quantity of sulphuric acid evaporated is insignificant; (iii) higher TL sensitivity –20% more than the present material; (iv) better glow curve structure; (v) lesser glow peak shift and better linearity to gamma and (vi) uniform crystal morphology and lower grain size—all grains are mostly cuboidal in shape, quite uniform and small (average size about 25 µm), suitable for manufacturing teflon discs in as-prepared form. Optimum values of various parameters in the method of preparation for a batch of 20 g CaSO4:Dy phosphors to obtain maximum TL sensitivity, with favourable glow curves are studied.

2 Present address: Saveetha Engineering College, Thandalam, Chennai 602105, India


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.