Study on the Delayed Neutron Nuclear Data for Analysis of Accelerator-Driven Reactor Dynamics

• Project/Area Number: 23561016
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Nuclear engineering
• Research Institution: Kinki University
• Principal Investigator: OHSAWA Takaaki 近畿大学, 理工学部, 教授 (10038028)
• Project Period (FY): 2011 – 2013
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2011: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 加速器駆動未臨界炉 / 遅発中性子 / 核データ / アクチニド核種 / 核分裂収率 / 遅発中性子放出確率 / 先行核 / 加速器駆動炉 / 遅発中性子収率 / 入射エネルギー依存性 / 原子力エネルギー / 動特性

Research Abstract

Evaluation methods for the delayed neutron yield (DNY) data for actinides for use in the analysis of dynamics of an accelerator-driven system were studied. The findings are the following: (1) The DNY calculated with summation method showed an exponential decrease similar to the one observed in experiments as we go to heavier actinides; (2) Two different sets of DN emission probability led to calculated results several times discrepant in magnitude; (3) More than 90% of contribution to the total DNY comes from major 20 precursors. This implies importance of improving accuracy of DN emission probability for these precursors; (4)At higher energies the DNY tends to decrease, the degree of which depends on prompt neutron multiplicity and proton even-odd effects of precursors.

Research Products

• [Journal Article] Measurement of large negative reactivity of an accelerator-driven system in the Kyoto University Critical Assembly (2013)
  • Author(s): Atsushi Sakon, Kengo Hashimoto, Muhammad Aiman bin Maarov, Masahiro Kawasaki, Wataru Sugiyama, Cheol-Ho Pyeon, Tadafumi Sano, Takaaki Ohsawa
  • Journal Title: Journal of Nuclear Science and Technology Volume: 51 Pages: 116-126
  • Peer Reviewed
• [Journal Article] Power spectral analysis for a thermal subcritical reactor system driven by a pulsed 14 MeV neutron source (2013)
  • Author(s): Atsushi Sakon, Kengo Hashimoto, Wataru Sugiyama, Hiroshi Taninaka, Cheol-Ho Pyeon, Tadafumi Sano, Tsuyoshi Misawa, Hironobu Unesaki, Takaaki Ohsawa
  • Journal Title: Journal of Nuclear Science and Technology Volume: 50 Pages: 481-492
  • Peer Reviewed
• [Journal Article] Power spectral analysis for a thermal subcritical reactor system driven by a pulsed 14 MeV neutron source (2013)
  • Author(s): A. Sakon, K. Hashimoto, W. Sugiyama, H. Taninaka, C. H. Pyeon, T. Sano, T. Misawa, H. Unesaki, T. Ohsawa
  • Journal Title: Journal of Nuclear Science and Engineering Volume: 50 Pages: 481-492
  • Peer Reviewed
• [Journal Article] Measurement of large negative reactivity of an accelerator-driven system in the Kyoto University Critical Assenbly (2013)
  • Author(s): A. Sakon, K. Mashimoto, M.B.A. Maarov, M. Kawasaki, W. Sugiyama, H. C. H. Pyeon, T. Sano, T. Ohsawa
  • Journal Title: Journal of Nuclear Science and Engineering Volume: 51 Pages: 116-126
  • Peer Reviewed
• [Journal Article] Monte Carlo simulation of prompt neutron emission during acceleration in fission (2012)
  • Author(s): Atsushi Matsumoto, Hiroshi Taninaka, Kengo Hashimoto and Takaaki Ohsawa
  • Journal Title: Journal of Nuclear Science and Technology Volume: 49 Pages: 782-792
  • NAID: 10030702670
  • Peer Reviewed
• [Journal Article] Monte Carlo Simulation of Prompt Neutron Emission during Acceleration in Fission (2012)
  • Author(s): A.Matsumoto, T.Ohsawa et al.
  • Journal Title: Journal of Nuclear Science and Technology Volume: 49
  • NAID: 10030702670
  • Peer Reviewed
• [Presentation] Thサイクル核種およびMA核種の核分裂即発中性子スペクトル計算法の精密化 (2014)
  • Author(s): 有澤公一, 大澤孝明
  • Organizer: 2014年度日本原子力学会春の年会J21
  • Place of Presentation: 東京都市大学
  • Year and Date: 2014-03-27
• [Presentation] Thサイクル核種およびMA核種の核分裂即発中性子スペクトル計算方法の精密化 (2014)
  • Author(s): 有澤公一、大澤孝明
  • Organizer: 2014年度日本原子力学会春の年会 J21
  • Place of Presentation: 東京都市大学
• [Presentation] 今さら訊けない核分裂の話 (2013)
  • Author(s): 大澤孝明
  • Organizer: 2013年核データ研究会(日本原子力研究開発機構主催)
  • Place of Presentation: 福井大学
  • Year and Date: 2013-11-15
• [Presentation] 今さら訊けない核分裂の話 (2013)
  • Author(s): 大澤孝明
  • Organizer: 2013年核データ研究会（日本原子力研究開発機構主催）
  • Place of Presentation: 福井大学
• [Remarks]
  • URL: http://www.kindai.ac.jp/database.html
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