Development of a TES microcalorimeter for spectroscopic measurement of LX-rays emitted by transuranium elements

Keisuke Maehata, Keisuke Nakamura, Takashi Yasumune, Kenji Ishibashi, Koji Takasaki, Keiichi Tanaka, Akikazu Odawara, Atsushi Nagata

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)308-313
Number of pages6
Journaljournal of nuclear science and technology
Volume47
Issue number3
DOIs
Publication statusPublished - Mar 26 2010

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Transuranium elements
transuranium elements
calorimeters
rays
Photons
sensors
Sensors
counting
photons
Phase transitions
signal detection
Signal detection
Full width at half maximum
Superconducting transition temperature
time constant
energy
transition temperature
X rays
decay
pulses

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering

Cite this

Development of a TES microcalorimeter for spectroscopic measurement of LX-rays emitted by transuranium elements. / Maehata, Keisuke; Nakamura, Keisuke; Yasumune, Takashi; Ishibashi, Kenji; Takasaki, Koji; Tanaka, Keiichi; Odawara, Akikazu; Nagata, Atsushi.

In: journal of nuclear science and technology, Vol. 47, No. 3, 26.03.2010, p. 308-313.

Research output: Contribution to journalArticle

Maehata, Keisuke ; Nakamura, Keisuke ; Yasumune, Takashi ; Ishibashi, Kenji ; Takasaki, Koji ; Tanaka, Keiichi ; Odawara, Akikazu ; Nagata, Atsushi. / Development of a TES microcalorimeter for spectroscopic measurement of LX-rays emitted by transuranium elements. In: journal of nuclear science and technology. 2010 ; Vol. 47, No. 3. pp. 308-313.
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AU - Odawara, Akikazu

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