TY - JOUR
T1 - Development of a TES Microcalorimeter for Spectroscopic Measurement of LX-rays Emitted by Transuranium Elements
AU - Maehata, Keisuke
AU - Nakamura, Keisuke
AU - Yasumune, Takashi
AU - Ishibashi, Kenji
AU - Takasaki, Koji
AU - Tanaka, Keiichi
AU - Odawara, Akikazu
AU - Nagata, Atsushi
N1 - Funding Information:
The authors gratefully acknowledge the support in experiments provided by the staff at the Radiation Protection Department of the Japan Atomic Energy Agency. This work is supported in part by a Grant-in-Aid for Scientific Research (A) (18206098) from the Japan Society for the Promotion of Science and the Japan Atomic Energy Agency Cooperative Research Scheme on the Nuclear Fuel Cycle.
PY - 2010/3
Y1 - 2010/3
N2 - 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 200mK using a bilayer structure of Au of 120 nm thickness and Ti of 50 nm thickness. A Au layer of 5.0 mm 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 ms 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.
AB - 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 200mK using a bilayer structure of Au of 120 nm thickness and Ti of 50 nm thickness. A Au layer of 5.0 mm 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 ms 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.
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U2 - 10.1080/18811248.2010.9711959
DO - 10.1080/18811248.2010.9711959
M3 - Article
AN - SCOPUS:85010619565
SN - 0022-3131
VL - 47
SP - 308
EP - 313
JO - journal of nuclear science and technology
JF - journal of nuclear science and technology
IS - 3
ER -