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지하실험 연구단
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Development of a high resolution alpha spectrometer using a magnetic calorimeter

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Title
Development of a high resolution alpha spectrometer using a magnetic calorimeter
Author(s)
W. S. Yoon; C. S. Kang; S. R. Kim; G. B. Kim; H. J. Lee; Lee M.K.; Lee J.H.; J. H. So; Y. H. Kim
Publication Date
2015-06
Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, v.784, no., pp.143 - 146
Publisher
ELSEVIER SCIENCE BV
Abstract
We have developed a high resolution alpha spectrometer with a magnetic calorimeter. The operating principle of the detector is the calorimetric measurement of the temperature increase from particle absorption in a gold foil absorber at milli-Kelvin temperatures. A magnetic calorimeter made of gold doped with erbium on a superconducting meander pickup coil was used to accurately measure the temperature change, thereby acting as an ultra-sensitive thermometer. The detector demonstrated 1.2 keV FWHM equivalent resolution in alpha particle detection with an 241Am source. Many peaks were observed in the low-energy region from the absorption of low-energy X-rays, gamma rays, and conversion electrons. An energy resolution of 400 eV FWHM was achieved for 60 keV gamma rays that were measured with the alpha particles. Possible applications of such high resolution detectors are discussed. © 2014 Elsevier B.V. All rights reserved
URI
https://pr.ibs.re.kr/handle/8788114/2006
ISSN
0168-9002
Appears in Collections:
Center for Underground Physics(지하실험 연구단) > Journal Papers (저널논문)
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