NDLI: Development of Decay Energy Spectroscopy for Radionuclide Analysis Using Cryogenic 4π Measurements

Content Provider	Springer Nature Link
Author	Jang, Y. S. Lee, S. J. Kim, G. B. Kim, I. H. Kim, M. S. Lee, H. J. Lee, J. S. Lee, K. B. Lee, M. K. Ri, H. C. Yoon, W. S. Kim, Y. H.
Copyright Year	2012
Abstract	We report the recent progress in the development of decay energy spectroscopy for radionuclide analysis using a metallic magnetic calorimeter. In the present analysis, sample radionuclides were completely enclosed by a 4π steradian absorber. The use of a 4π absorber composed of gold foil guarantees that the total energy associated with radioactive decay is converted into thermal energy in the absorber. A paramagnetic temperature sensor was attached to the absorber to accurately measure the temperature change due to radioactive decay. The plutonium isotopes $^{238}$Pu, $^{239}$Pu, and $^{240}$Pu were readily identified in the decay energy spectrum because each isotope creates a single peak at its characteristic Q value. Two clear peaks were observed for $^{239}$Pu and $^{240}$Pu, and a 6.3 keV FWHM was obtained. The energy resolution of the method was affected by the low-energy tail of the spectrum at the left-hand side of the peaks. A 4.1 keV FWHM of a Gaussian fit was obtained for the right-hand side of the peak. Slow heat release to the absorber due to heat flow mechanisms is discussed to explain the low-energy tailing effect.
Starting Page	967
Ending Page	972
Page Count	6
File Format	PDF
ISSN	00222291
Journal	Journal of Low Temperature Physics
Volume Number	167
Issue Number	5-6
e-ISSN	15737357
Language	English
Publisher	Springer US
Publisher Date	2012-01-24
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cryogenic detectors Metallic magnetic calorimeter Q spectrometer Alpha spectroscopy Characterization and Evaluation of Materials Condensed Matter Physics Magnetism, Magnetic Materials
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Materials Science

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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