Cross-section measurement of 237Np (n, γ) from 10 meV to 1 keV at Japan Proton Accelerator Research Complex

Kentaro Hirose; Kazuyoshi Furutaka; Kaoru Y. Hara; Hideo Harada; Atsushi Kimura; Tadahiro Kin; Fumito Kitatani; Mitsuo Koizumi; Shoji Nakamura; Masumi Oshima; Yosuke Toh; Masayuki Igashira; Tatsuya Katabuchi; Motoharu Mizumoto; Takashi Kamiyama; Koichi Kino; Yoshiaki Kiyanagi; Jun Ichi Hori

doi:10.1080/00223131.2013.757470

Cross-section measurement of ²³⁷Np (n, γ) from 10 meV to 1 keV at Japan Proton Accelerator Research Complex

Kentaro Hirose, Kazuyoshi Furutaka, Kaoru Y. Hara, Hideo Harada, Atsushi Kimura, Tadahiro Kin, Fumito Kitatani, Mitsuo Koizumi, Shoji Nakamura, Masumi Oshima, Yosuke Toh, Masayuki Igashira, Tatsuya Katabuchi, Motoharu Mizumoto, Takashi Kamiyama, Koichi Kino, Yoshiaki Kiyanagi, Jun Ichi Hori

Engineering Science for Advanced energy system

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Abstract

The cross-section of the ²³⁷Np (n; γ) reaction has been measured in the energy range from 10 meV to 1 keV using the ANNRI-NaI(Tl) spectrometer at the Japan Proton Accelerator Research Complex (JPARC). The cross-section was obtained relative to that of the ¹⁰B (n; α₁) reaction. The absolute value of the cross-section was deduced by normalizing the relative cross-section to the evaluated value of JENDL-4.0 at the first resonance. The thermal cross-section was obtained to be (176.7 ± 0.5_sta ± 4.7_sys) b. The Maxwellian-averaged cross-section for kT = 25:3 meV was derived as (174.6 ± 0.6_sta ± 5.1_sys) b by referring the cross-section below 10 meV from JENDL-4.0. These results lead to the Westcott's g-factor of 0.988 ± 0.004_sta ± 0.009_sys.

Original language	English
Pages (from-to)	188-200
Number of pages	13
Journal	journal of nuclear science and technology
Volume	50
Issue number	2
DOIs	https://doi.org/10.1080/00223131.2013.757470
Publication status	Published - Feb 2013

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Nuclear Energy and Engineering

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Hirose, K., Furutaka, K., Hara, K. Y., Harada, H., Kimura, A., Kin, T., Kitatani, F., Koizumi, M., Nakamura, S., Oshima, M., Toh, Y., Igashira, M., Katabuchi, T., Mizumoto, M., Kamiyama, T., Kino, K., Kiyanagi, Y., & Hori, J. I. (2013). Cross-section measurement of ²³⁷Np (n, γ) from 10 meV to 1 keV at Japan Proton Accelerator Research Complex. journal of nuclear science and technology, 50(2), 188-200. https://doi.org/10.1080/00223131.2013.757470

Hirose, K, Furutaka, K, Hara, KY, Harada, H, Kimura, A, Kin, T, Kitatani, F, Koizumi, M, Nakamura, S, Oshima, M, Toh, Y, Igashira, M, Katabuchi, T, Mizumoto, M, Kamiyama, T, Kino, K, Kiyanagi, Y & Hori, JI 2013, 'Cross-section measurement of ²³⁷Np (n, γ) from 10 meV to 1 keV at Japan Proton Accelerator Research Complex', journal of nuclear science and technology, vol. 50, no. 2, pp. 188-200. https://doi.org/10.1080/00223131.2013.757470

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title = "Cross-section measurement of 237Np (n, γ) from 10 meV to 1 keV at Japan Proton Accelerator Research Complex",

abstract = "The cross-section of the 237Np (n; γ) reaction has been measured in the energy range from 10 meV to 1 keV using the ANNRI-NaI(Tl) spectrometer at the Japan Proton Accelerator Research Complex (JPARC). The cross-section was obtained relative to that of the 10B (n; α1) reaction. The absolute value of the cross-section was deduced by normalizing the relative cross-section to the evaluated value of JENDL-4.0 at the first resonance. The thermal cross-section was obtained to be (176.7 ± 0.5sta ± 4.7sys) b. The Maxwellian-averaged cross-section for kT = 25:3 meV was derived as (174.6 ± 0.6sta ± 5.1sys) b by referring the cross-section below 10 meV from JENDL-4.0. These results lead to the Westcott's g-factor of 0.988 ± 0.004sta ± 0.009sys.",

author = "Kentaro Hirose and Kazuyoshi Furutaka and Hara, {Kaoru Y.} and Hideo Harada and Atsushi Kimura and Tadahiro Kin and Fumito Kitatani and Mitsuo Koizumi and Shoji Nakamura and Masumi Oshima and Yosuke Toh and Masayuki Igashira and Tatsuya Katabuchi and Motoharu Mizumoto and Takashi Kamiyama and Koichi Kino and Yoshiaki Kiyanagi and Hori, {Jun Ichi}",

note = "Funding Information: The authors would like to thank the accelerator and technical staff at J-PARC for operation of the accelerator and the neutron production target and for the other experimental supports. This work is supported by JSPS KAKENHI (22226016).",

year = "2013",

month = feb,

doi = "10.1080/00223131.2013.757470",

language = "English",

volume = "50",

pages = "188--200",

journal = "journal of nuclear science and technology",

issn = "0022-3131",

publisher = "Atomic Energy Society of Japan",

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T1 - Cross-section measurement of 237Np (n, γ) from 10 meV to 1 keV at Japan Proton Accelerator Research Complex

AU - Hirose, Kentaro

AU - Furutaka, Kazuyoshi

AU - Hara, Kaoru Y.

AU - Harada, Hideo

AU - Kimura, Atsushi

AU - Kin, Tadahiro

AU - Kitatani, Fumito

AU - Koizumi, Mitsuo

AU - Nakamura, Shoji

AU - Oshima, Masumi

AU - Toh, Yosuke

AU - Igashira, Masayuki

AU - Katabuchi, Tatsuya

AU - Mizumoto, Motoharu

AU - Kamiyama, Takashi

AU - Kino, Koichi

AU - Kiyanagi, Yoshiaki

AU - Hori, Jun Ichi

N1 - Funding Information: The authors would like to thank the accelerator and technical staff at J-PARC for operation of the accelerator and the neutron production target and for the other experimental supports. This work is supported by JSPS KAKENHI (22226016).

PY - 2013/2

Y1 - 2013/2

N2 - The cross-section of the 237Np (n; γ) reaction has been measured in the energy range from 10 meV to 1 keV using the ANNRI-NaI(Tl) spectrometer at the Japan Proton Accelerator Research Complex (JPARC). The cross-section was obtained relative to that of the 10B (n; α1) reaction. The absolute value of the cross-section was deduced by normalizing the relative cross-section to the evaluated value of JENDL-4.0 at the first resonance. The thermal cross-section was obtained to be (176.7 ± 0.5sta ± 4.7sys) b. The Maxwellian-averaged cross-section for kT = 25:3 meV was derived as (174.6 ± 0.6sta ± 5.1sys) b by referring the cross-section below 10 meV from JENDL-4.0. These results lead to the Westcott's g-factor of 0.988 ± 0.004sta ± 0.009sys.

AB - The cross-section of the 237Np (n; γ) reaction has been measured in the energy range from 10 meV to 1 keV using the ANNRI-NaI(Tl) spectrometer at the Japan Proton Accelerator Research Complex (JPARC). The cross-section was obtained relative to that of the 10B (n; α1) reaction. The absolute value of the cross-section was deduced by normalizing the relative cross-section to the evaluated value of JENDL-4.0 at the first resonance. The thermal cross-section was obtained to be (176.7 ± 0.5sta ± 4.7sys) b. The Maxwellian-averaged cross-section for kT = 25:3 meV was derived as (174.6 ± 0.6sta ± 5.1sys) b by referring the cross-section below 10 meV from JENDL-4.0. These results lead to the Westcott's g-factor of 0.988 ± 0.004sta ± 0.009sys.

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Cross-section measurement of ²³⁷Np (n, γ) from 10 meV to 1 keV at Japan Proton Accelerator Research Complex

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