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Radiation Protection Dosimetry Advance Access published online on September 15, 2009
Radiation Protection Dosimetry, doi:10.1093/rpd/ncp174
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© The Author 2009. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

DEVELOPMENT OF AN ALGORITHM FOR EVALUATING PERSONAL DOSES DUE TO PHOTON FIELDS IN TERMS OF OPERATIONAL QUANTITIES FOR TLD BADGE SYSTEM IN INDIA

S. M. Pradhan1,*, C. Sneha1, G. Chourasiya1, M. M. Adtani1, S. M. Tripathi2 and S. K. Singh2

1 Radiological Physics and Advisory Division, Bhabha Atomic Research Centre (BARC), Mumbai 400 085, India
2 Radiation Safety Systems Division, Bhabha Atomic Research Centre, Mumbai 400 085, India

* Corresponding author: smprpad{at}rediffmail.com

Received May 22, 2009, amended July 29, 2009, accepted August 24, 2009

In order to evaluate and report the personal doses in terms of personal dose equivalent, the performance of the CaSO4:Dy based thermoluminescence dosemeter (TLD) badge used for countrywide personnel monitoring in India is investigated using monoenergetic and narrow spectrum radiation qualities equivalent to those given in ISO standards. Algorithms suitable for evaluating Hp(10) and Hp(0.07) within ±30 % are developed from the responses of dosemeter elements/discs under different filters for normal as well as angular irradiation conditions using these beams. The algorithm is tested for TLD badges irradiated to mixtures of low- and high-energy (137Cs) beams in various proportions. The paper concludes with the results of test of algorithm by evaluation of badges used in the IAEA/RCA intercomparison studies and discussion on inherent limitations.


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