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

• MAEHATA Keisuke

  Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University

• NAKAMURA Keisuke

  Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University

• YASUMUNE Takashi

  Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University

• ISHIBASHI Kenji

  Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University

• TAKASAKI Koji

  Nuclear Fuel Cycle Engineering Laboratories, Tokai Research and Development Center, Japan Atomic Ene

• TANAKA Keiichi

  SII NanoTechnology Inc.

• ODAWARA Akikazu

  SII NanoTechnology Inc.

• NAGATA Atsushi

  SII NanoTechnology Inc.

• TAKASAKI Koji

  Japan Atomic Energy Agency

• Takasaki Koji

  Nuclear Fuel Cycle Engineering Laboratories Tokai Research And Development Center Japan Atomic Energ

• Takasaki Koji

  Nuclear Fuel Cycle Engineering Laboratories Japan Atomic Energy Agency

• Odawara Akikazu

  Sii Nano Technology Inc.

• Ishibashi Kenji

  Department Of Applied Quantum Physics And Nuclear Engineering Kyushu University

• Ishibashi Kenji

  Department Of Applied Quantum Physics And Nuclear Engineering Faculty Of Engineering Kyushu Universi

• Maehata Keisuke

  Department Of Applied Quantum Physics And Nuclear Engineering Kyushu University

• Yasumune Takashi

  Department Of Applied Quantum Physics And Nuclear Engineering Kyushu University

• Tanaka Keiichi

  Sii Nano Technology Inc.

• Nakamura Keisuke

  Department Of Applied Quantum Physics And Nuclear Engineering Kyushu University

• Nakamura Keisuke

  Department Of Aeronautics And Astronautics Graduate School Of Engineering Kyoto University

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