Measurement of neutron capture cross section ratios of 244Cm resonances using NNRI

Shinji Goko; Atsushi Kimura; Hideo Harada; Masumi Oshima; Masayuki Ohta; Kazuyoshi Furutaka; Tadahiro Kin; Fumito Kitatani; Mitsuo Koizumi; Shoji Nakamura; Yosuke Toh; Masayuki Igashira; Tatsuya Katabuchi; Motoharu Mizumoto; Yoshiaki Kiyanagi; Koichi Kino; Michihiro Furusaka; Fujio Hiraga; Takashi Kamiyama; Jun Ichi Hori; Toshiyuki Fujii; Satoshi Fukutani; Koichi Takamiya

doi:10.3327/jnst.47.1097

Measurement of neutron capture cross section ratios of ²⁴⁴Cm resonances using NNRI

Shinji Goko, Atsushi Kimura, Hideo Harada, Masumi Oshima, Masayuki Ohta, Kazuyoshi Furutaka, Tadahiro Kin, Fumito Kitatani, Mitsuo Koizumi, Shoji Nakamura, Yosuke Toh, Masayuki Igashira, Tatsuya Katabuchi, Motoharu Mizumoto, Yoshiaki Kiyanagi, Koichi Kino, Michihiro Furusaka, Fujio Hiraga, Takashi Kamiyama, Jun Ichi HoriToshiyuki Fujii, Satoshi Fukutani, Koichi Takamiya

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

A study was conducted to demonstrate the results of the capture cross section measurement for highly radioactive ²⁴⁴Cm obtained using the 4π Ge spectrometer. Neutron capture measurements with a time-of-flight (TOF) technique were carried out for a ²⁴⁴Cm sample, using neutron-nucleus reaction instrument (NNRI) installed at the Beam Line No. 4 (BL04) of the Materials and Life Science Experimental Facility (MLF) in the Japan Proton Accelerator Research Complex (J-PARC). A disk chopper with a semicircular shape was used to prevent the intrusion of the low-energy tail of a neutron pulse into the next pulse duration. The TOF spectrum for the Cm sample measured, using the 4π Ge spectrometer revealed the first experimental data in the world wherein the neutron capture resonances were observed below 20 eV. The neutron energy was calibrated by measuring a Au sample with neutron resonances, while the dead time of detectors was deduced by comparing the number of random timing pulses from the random pulse generator with the number of measured pulses.

Original language	English
Pages (from-to)	1097-1100
Number of pages	4
Journal	journal of nuclear science and technology
Volume	47
Issue number	12
DOIs	https://doi.org/10.3327/jnst.47.1097
Publication status	Published - Dec 2010
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Nuclear Energy and Engineering

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10.3327/jnst.47.1097

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Goko, S., Kimura, A., Harada, H., Oshima, M., Ohta, M., Furutaka, K., Kin, T., Kitatani, F., Koizumi, M., Nakamura, S., Toh, Y., Igashira, M., Katabuchi, T., Mizumoto, M., Kiyanagi, Y., Kino, K., Furusaka, M., Hiraga, F., Kamiyama, T., ... Takamiya, K. (2010). Measurement of neutron capture cross section ratios of ²⁴⁴Cm resonances using NNRI. journal of nuclear science and technology, 47(12), 1097-1100. https://doi.org/10.3327/jnst.47.1097

Goko, S, Kimura, A, Harada, H, Oshima, M, Ohta, M, Furutaka, K, Kin, T, Kitatani, F, Koizumi, M, Nakamura, S, Toh, Y, Igashira, M, Katabuchi, T, Mizumoto, M, Kiyanagi, Y, Kino, K, Furusaka, M, Hiraga, F, Kamiyama, T, Hori, JI, Fujii, T, Fukutani, S & Takamiya, K 2010, 'Measurement of neutron capture cross section ratios of ²⁴⁴Cm resonances using NNRI', journal of nuclear science and technology, vol. 47, no. 12, pp. 1097-1100. https://doi.org/10.3327/jnst.47.1097

@article{7976f6f1f00b4c93b16833523791ffea,

title = "Measurement of neutron capture cross section ratios of 244Cm resonances using NNRI",

abstract = "A study was conducted to demonstrate the results of the capture cross section measurement for highly radioactive 244Cm obtained using the 4π Ge spectrometer. Neutron capture measurements with a time-of-flight (TOF) technique were carried out for a 244Cm sample, using neutron-nucleus reaction instrument (NNRI) installed at the Beam Line No. 4 (BL04) of the Materials and Life Science Experimental Facility (MLF) in the Japan Proton Accelerator Research Complex (J-PARC). A disk chopper with a semicircular shape was used to prevent the intrusion of the low-energy tail of a neutron pulse into the next pulse duration. The TOF spectrum for the Cm sample measured, using the 4π Ge spectrometer revealed the first experimental data in the world wherein the neutron capture resonances were observed below 20 eV. The neutron energy was calibrated by measuring a Au sample with neutron resonances, while the dead time of detectors was deduced by comparing the number of random timing pulses from the random pulse generator with the number of measured pulses.",

author = "Shinji Goko and Atsushi Kimura and Hideo Harada and Masumi Oshima and Masayuki Ohta and Kazuyoshi Furutaka and Tadahiro Kin and Fumito Kitatani and Mitsuo Koizumi and Shoji Nakamura and Yosuke Toh and Masayuki Igashira and Tatsuya Katabuchi and Motoharu Mizumoto and Yoshiaki Kiyanagi and Koichi Kino and Michihiro Furusaka and Fujio Hiraga and Takashi Kamiyama and Hori, {Jun Ichi} and Toshiyuki Fujii and Satoshi Fukutani and Koichi Takamiya",

note = "Funding Information: The present study is the result of {\textquoteleft}{\textquoteleft}Study on nuclear data by using a high-intensity pulsed neutron source for advanced nuclear system{\textquoteright}{\textquoteright} entrusted to Hokkaido University by the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT).",

year = "2010",

month = dec,

doi = "10.3327/jnst.47.1097",

language = "English",

volume = "47",

pages = "1097--1100",

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publisher = "Atomic Energy Society of Japan",

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T1 - Measurement of neutron capture cross section ratios of 244Cm resonances using NNRI

AU - Goko, Shinji

AU - Kimura, Atsushi

AU - Harada, Hideo

AU - Oshima, Masumi

AU - Ohta, Masayuki

AU - Furutaka, Kazuyoshi

AU - Kin, Tadahiro

AU - Kitatani, Fumito

AU - Koizumi, Mitsuo

AU - Nakamura, Shoji

AU - Toh, Yosuke

AU - Igashira, Masayuki

AU - Katabuchi, Tatsuya

AU - Mizumoto, Motoharu

AU - Kiyanagi, Yoshiaki

AU - Kino, Koichi

AU - Furusaka, Michihiro

AU - Hiraga, Fujio

AU - Kamiyama, Takashi

AU - Hori, Jun Ichi

AU - Fujii, Toshiyuki

AU - Fukutani, Satoshi

AU - Takamiya, Koichi

N1 - Funding Information: The present study is the result of ‘‘Study on nuclear data by using a high-intensity pulsed neutron source for advanced nuclear system’’ entrusted to Hokkaido University by the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT).

PY - 2010/12

Y1 - 2010/12

N2 - A study was conducted to demonstrate the results of the capture cross section measurement for highly radioactive 244Cm obtained using the 4π Ge spectrometer. Neutron capture measurements with a time-of-flight (TOF) technique were carried out for a 244Cm sample, using neutron-nucleus reaction instrument (NNRI) installed at the Beam Line No. 4 (BL04) of the Materials and Life Science Experimental Facility (MLF) in the Japan Proton Accelerator Research Complex (J-PARC). A disk chopper with a semicircular shape was used to prevent the intrusion of the low-energy tail of a neutron pulse into the next pulse duration. The TOF spectrum for the Cm sample measured, using the 4π Ge spectrometer revealed the first experimental data in the world wherein the neutron capture resonances were observed below 20 eV. The neutron energy was calibrated by measuring a Au sample with neutron resonances, while the dead time of detectors was deduced by comparing the number of random timing pulses from the random pulse generator with the number of measured pulses.

AB - A study was conducted to demonstrate the results of the capture cross section measurement for highly radioactive 244Cm obtained using the 4π Ge spectrometer. Neutron capture measurements with a time-of-flight (TOF) technique were carried out for a 244Cm sample, using neutron-nucleus reaction instrument (NNRI) installed at the Beam Line No. 4 (BL04) of the Materials and Life Science Experimental Facility (MLF) in the Japan Proton Accelerator Research Complex (J-PARC). A disk chopper with a semicircular shape was used to prevent the intrusion of the low-energy tail of a neutron pulse into the next pulse duration. The TOF spectrum for the Cm sample measured, using the 4π Ge spectrometer revealed the first experimental data in the world wherein the neutron capture resonances were observed below 20 eV. The neutron energy was calibrated by measuring a Au sample with neutron resonances, while the dead time of detectors was deduced by comparing the number of random timing pulses from the random pulse generator with the number of measured pulses.

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JF - Journal of Nuclear Science and Technology

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Measurement of neutron capture cross section ratios of ²⁴⁴Cm resonances using NNRI

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