Journal Article

Absolute measurement of activity of 198Au foils using the 4πβ–γ coincidence counting method and corrections by the Monte Carlo simulation

Jun Nishiyama, Hideki Harano, Tetsuro Matsumoto, Yasushi Sato, Akira Uritani and Katsuhisa Kudo

in Radiation Protection Dosimetry

Volume 148, issue 2, pages 237-241
Published in print January 2012 | ISSN: 0144-8420
Published online March 2011 | e-ISSN: 1742-3406 | DOI: https://dx.doi.org/10.1093/rpd/ncr029
Absolute measurement of activity of 198Au foils using the 4πβ–γ coincidence counting method and
corrections by the Monte Carlo simulation

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The thermal neutron fluence rate is determined by the gold activation method. The absolute activity of the irradiated gold foil is measured by a 4πβ–γ coincidence counter. Using this method, corrections for the detection of conversion electrons and gamma rays by a 4πβ counter are very important to obtain accurate absolute activity. In this work, Monte Carlo simulations were performed to derive the correction factor K. The absolute measurement of 198Au activity for 20–100 μm thickness Au foils were performed to verify the calculating model of the 4πβ–γ coincidence counting system.

Journal Article.  2512 words.  Illustrated.

Subjects: Nuclear Chemistry, Photochemistry, and Radiation

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