Development of cryogenic alpha spectrometers using metallic magnetic calorimeters

Ranitzsch, P. C.-O.; Kempf, Sebastian; Pabinger, A.; Pies, C.; Porst, Jan‐Patrick; Schäfer, Stefan; Fleischmann, A.; Gastaldo, L.; Enss, C.; Jang, Y. S.; Kim, I.H.; Kim, M.S.; Kim, Yoon Hak; Lee, J.S.; Lee, K.B.; Lee, M.K.; Lee, S.J.; Yoon, Won-Sik; Yuryev, Yury

doi:10.1016/j.nima.2010.11.066

Cited by 22 publications

(14 citation statements)

References 14 publications

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“…To improve the 4π measurement method, a large meander sensor [3] can be employed to handle an absorber with large heat capacity. An absorber that is several millimeters in size [8] can be an effective 4π host to hold all of radioactive source materials.…”

Section: Discussionmentioning

confidence: 99%

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

et al. 2012

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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.

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Section: Discussionmentioning

confidence: 99%

“…The energy resolution in alpha spectroscopy has been remarkably improved by using low temperature detectors during the recent years [1][2][3][4]. Transition edge sensors (TESs) and metallic magnetic calorimeters (MMCs) provide an energy resolution of 1-3 keV for thin layer alpha sources.…”

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confidence: 99%

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

et al. 2012

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“…2. Sensor of gold doped with a small concentration of erbium (Au:Er) for which the magnetization changes as a function of modification in temperature by α-particle absorption -energy resolution of (2.83 ± 0.05) keV FWHM was determined for 5.5 MeV α particles [21]. Such ultra-high resolutions are a significant improvement beyond the theoretical limit of conventional silicon detectors.…”

Section: Figmentioning

confidence: 99%

Radioactive decay data: powerful aids in medical diagnosis and therapy, analytical science and other applications

Nichols

2012

Radiochimica Acta

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Summary. Decay data are commonly used to characterise and quantify radioactive material, and provide an important means of understanding the properties and structure of the nucleus. Experimental measurement techniques are reviewed, with the emphasis placed on recent developments that represent a potential quantum leap in advancing our knowledge, particularly by means of γ -ray spectroscopy. A select number of internationally-accepted decay-data evaluations and compilations are also discussed in terms of their contents. Both energy and non-energy related applications require the input of well-defined decay data, and such activities have been reviewed. Various important decay-data issues are assessed, and note taken of any significant requirements for better quantified data.

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“…An energy resolution of 2.7 eV FWHM was achieved for 6 keV X-rays [3]. This detection method has recently been adopted in alpha spectrometry [6] and in double beta decay experiments [7].…”

Section: Introductionmentioning

confidence: 99%

High Energy Resolution Cryogenic Alpha Spectrometers Using Magnetic Calorimeters

et al. 2012

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We report the recent progress on high resolution alpha spectrometers that use metallic magnetic calorimeters. The detector is composed of a meander-type magnetic calorimeter and a gold-foil absorber. The thermal connection between the magnetic sensor and the absorber consists of annealed gold wires. The signal rise time is found to be as expected, with the electronic thermal conductance of gold wires. The energy resolution of a 3.2 keV FWHM is obtained for 5.5 MeV alpha particles with possibilities for further improvements.

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Development of cryogenic alpha spectrometers using metallic magnetic calorimeters

Cited by 22 publications

References 14 publications

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

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

Radioactive decay data: powerful aids in medical diagnosis and therapy, analytical science and other applications

High Energy Resolution Cryogenic Alpha Spectrometers Using Magnetic Calorimeters

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