Authors:
S. Bhade Radiation Safety Systems Division, Bhabha Atomic Research Centre, Mumbai, 400085 India

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P. Reddy Radiation Safety Systems Division, Bhabha Atomic Research Centre, Mumbai, 400085 India

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A. Narayanan Radiation Safety Systems Division, Bhabha Atomic Research Centre, Mumbai, 400085 India

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K. Narayan Radiation Safety Systems Division, Bhabha Atomic Research Centre, Mumbai, 400085 India

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D. Babu Radiation Safety Systems Division, Bhabha Atomic Research Centre, Mumbai, 400085 India

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D. Sharma Radiation Safety Systems Division, Bhabha Atomic Research Centre, Mumbai, 400085 India

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Abstract  

Simultaneous measurement of gross alpha and gross beta activities by liquid scintillation counting technique using LKB Wallac Quantulus 1220 liquid scintillation counter (LSC) equipped with Pulse Shape Analyzer (PSA) is described. Three sets of pure alpha and pure beta standards simulating the activity concentration values of real samples in terms of α/β activity ratios were used to calibrate the LSC. Calibration methodology for the Quantulus 1220 with respect to the above measurements using 241Am and 90Sr/90Y standards of respective activity concentrations of ~25 dpm and ~104 dpm is described in detail. Also highlighted the need to calibrate the LSC using another set of 241Am and 90Sr/90Y standards of low and high activity concentrations respectively. The practicability and working performance of these calibration plots was checked by the validation trials with test samples spiked with 241Am and 90Sr/90Y covering range of α/β activity ratios from 1:1 to 1:50.

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation
1968
Volumes
per Year
1
Issues
per Year
12
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)