Development of a TES Microcalorimeter for Spectroscopic Measurement of LX-rays Emitted by Transuranium Elements
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概要
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A phase transition edge sensor (TES) microcalorimeter was developed for the energy-dispersive measurement of LX-ray photons emitted by transuranium elements. The phase transition temperature of the TES was designed to be 200 mK using a bilayer structure of Au of 120 nm thickness and Ti of 50 nm thickness. A Au layer of 5.0 μm thickness was deposited on the Au/Ti bilayer to achieve an absorption efficiency of 50% and counting rate of 100 counts per second in the detection of LX-ray photons with energy from 10 to 20 keV. The TES microcalorimeter was operated for the detection of LX-ray photons emitted by 241Am, 238Pu, and 239Pu sources. A decay time constant of 180 μs for the detection signal pulses allowed the TES microcalorimeter to operate with a counting rate higher than 100 counts per second. The achieved energy resolution was 50 eV for the full width at half maximum of a peak corresponding to a 237Np Lβ1 X-ray of 17.75 keV.
- 2010-03-01
著者
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MAEHATA Keisuke
Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University
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NAKAMURA Keisuke
Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University
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YASUMUNE Takashi
Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University
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ISHIBASHI Kenji
Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University
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TAKASAKI Koji
Nuclear Fuel Cycle Engineering Laboratories, Tokai Research and Development Center, Japan Atomic Ene
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TANAKA Keiichi
SII NanoTechnology Inc.
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ODAWARA Akikazu
SII NanoTechnology Inc.
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NAGATA Atsushi
SII NanoTechnology Inc.
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TAKASAKI Koji
Japan Atomic Energy Agency
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Takasaki Koji
Nuclear Fuel Cycle Engineering Laboratories Tokai Research And Development Center Japan Atomic Energ
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Takasaki Koji
Nuclear Fuel Cycle Engineering Laboratories Japan Atomic Energy Agency
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Odawara Akikazu
Sii Nano Technology Inc.
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Ishibashi Kenji
Department Of Applied Quantum Physics And Nuclear Engineering Kyushu University
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Ishibashi Kenji
Department Of Applied Quantum Physics And Nuclear Engineering Faculty Of Engineering Kyushu Universi
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Maehata Keisuke
Department Of Applied Quantum Physics And Nuclear Engineering Kyushu University
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Yasumune Takashi
Department Of Applied Quantum Physics And Nuclear Engineering Kyushu University
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Tanaka Keiichi
Sii Nano Technology Inc.
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Nakamura Keisuke
Department Of Applied Quantum Physics And Nuclear Engineering Kyushu University
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Nakamura Keisuke
Department Of Aeronautics And Astronautics Graduate School Of Engineering Kyoto University
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