Technical developments for accurate determination of amount of samples used for TOF measurements

Activity determination of 241,243Am samples has been performed with two separate methods of calorimetry and gamma-ray spectroscopy. Decay heat measurements of the samples were carried out by using a calorimeter, and activities of the samples were accurately determined with uncertainties less than 0....

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Bibliographic Details
Main Authors: Terada, Kazushi, Nakao, Taro, Nakamura, Shoji, Kimura, Atsushi, Iwamoto, Osamu, Harada, Hideo, Takamiya, Koichi, Hori, Jun-ichi
Format: Conference Proceeding
Language:English
Subjects:
Computer simulation
Gamma rays
Heat measurement
Monte Carlo simulation
Spectrum analysis
Uncertainty
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Summary:Activity determination of 241,243Am samples has been performed with two separate methods of calorimetry and gamma-ray spectroscopy. Decay heat measurements of the samples were carried out by using a calorimeter, and activities of the samples were accurately determined with uncertainties less than 0.45%. The primary source of uncertainty in the calorimetric method is the accuracy of available half-life data. Gamma-ray detection efficiencies of a HPGe detector were determined with uncertainties of 1.5% by combining measured efficiencies and Monte Carlo simulation. Activities of the samples were determined with uncertainties less than 2.0% by gamma-ray spectroscopy and were concordant with those of the calorimetry.
ISSN:2100-014X
2101-6275
2100-014X
DOI:10.1051/epjconf/201714603019