A diamond 14 MeV neutron energy spectrometer with high energy resolution

Journal Article · Mon Feb 15 00:00:00 EST 2016 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4940929· OSTI ID:22482848

Shimaoka, Takehiro; Kaneko, Junichi H.; Tsubota, Masakatsu; Shimmyo, Hiroaki ^[1]; Ochiai, Kentaro ^[2]; Chayahara, Akiyoshi; Umezawa, Hitoshi; Shikata, Shin-ichi ^[3]; Watanabe, Hideyuki ^[4]; Isobe, Mitsutaka; Osakabe, Masaki ^[5]

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1. Graduate School of Engineering, Hokkaido University, Kita 13, Nishi 8, Kita-ku, Sapporo, Hokkaido 060-8628 (Japan)
2. Fusion Research and Development Directorate, Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki 319-1195 (Japan)
3. National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577 (Japan)
4. National Institute of Advanced Industrial Science and Technology, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565 (Japan)
5. National Institute for Fusion Science, 322-6, Oroshi-cho, Toki-City, Gifu 509-5292 (Japan)

A self-standing single-crystal chemical vapor deposited diamond was obtained using lift-off method. It was fabricated into a radiation detector and response function measurements for 14 MeV neutrons were taken at the fusion neutronics source. 1.5% of high energy resolution was obtained by using the {sup 12}C(n, α){sup 9}Be reaction at an angle of 100° with the deuteron beam line. The intrinsic energy resolution, excluding energy spreading caused by neutron scattering, slowing in the target and circuit noises was 0.79%, which was also the best resolution of the diamond detector ever reported.

• OSTI ID: 22482848
• Journal Information: Review of Scientific Instruments, Vol. 87, Issue 2; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BERYLLIUM 9
CARBON 12
CHEMICAL VAPOR DEPOSITION
DEUTERON BEAMS
DIAMONDS
ENERGY RESOLUTION
MEV RANGE 10-100
MONOCRYSTALS
NEUTRON DIFFRACTION
NEUTRONS
NOISE
RADIATION DETECTORS
RESPONSE FUNCTIONS
SPECTROMETERS