Measurement of Prompt Fission Neutron Spectrum of Neptunium-237 for 0. 62 MeV Incident Neutrons

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概要

• 論文の詳細を見る

• The prompt fission neutron spectrum of 237Np induced by 0.62 MeV neutrons has been measured by using a Time-of-Flight (TOF) method with a heavily shielded NE213 scintillator. The 4.5 MV Dynamitron accelerator of Tohoku University was used to produce pulsed neutrons. The sample used was NpO2 powder enclosed in a stainless steel container. The fission spectrum data were obtained in the energy range from 0.8 to 12 MeV. Best fit parameters to the exsperimental data have been derived for the Maxwellian and the Watt type distribution functions. The Maxwellian temperature Tm of the present work was 1.28±0.04 MeV. It is smaller than the Maxwellian temperature of 1.38 MeV given by JENDL-3.2, but is consistent with that derived by the Howerton-Doyas formula on the relation between the average energy or Maxwellian temperature and the average number of prompt fission neutrons (νf). The measured spectrum is well described in terms of the Watt distribution, χw = Cw sinh(√1.95E) exp(-1.01E).

• 社団法人 日本原子力学会の論文
• 1999-06-25

著者

• BABA Mamoru

  Tohoku University

• BABA Mamoru

  Department of Quantum Science and Energy Engineering, Tohoku University

• SANAMI Toshiya

  Department of Quantum Science and Energy Engineering, Tohoku University

• IBARAKI Masanobu

  Department of Quantum Science and Energy Engineering, Tohoku University

• IWASAKI Tomohiko

  Department of Quantum Science and Energy Engineering, Tohoku University

• HIRAKAWA Naohiro

  Department of Quantum Science and Energy Engineering, Tohoku University

• Tomohiko Iwasaki

  Department Of Quantum Science And Energy Engineering Graduate School Of Engineering Tohoku Universit

• Takagi Shunji

  Mitsubishi Research Institute Inc.

• Baba M

  Department Of Quantum Science And Energy Engineering Tohoku University

• Sanami T

  Department Of Quantum Science And Energy Engineering Tohoku University

• Sanami Toshiya

  Department Of Quantum Science And Energy Engineering Tohoku University

• Win Than

  Department Of Quantum Science And Energy Engineering Graduate School Of Engineering Tohoku Universit

• Baba Mamoru

  Department Of Electrical And Electronic Engineering Iwate University

• MIURA Takako

  Department of Rheumatology, Matsubara Mayflower Hospital

• Tanaka S

  Takasaki Research Establishment Japan Atomic Energy Research Institute

• Ibaraki Masanobu

  Department Of Quantum Science And Energy Engineering Tohoku University

• Hirakawa N

  Department Of Quantum Science And Energy Engineering Tohoku University

• Nakashima Hiroshi

  Department Of Quantum Science And Energy Engineering Tohoku University

• Hirakawa Naohiro

  Department Of Nuclear Engineering Tohoku University

• Miura Takako

  Department Of Quantum Science And Energy Engineering Graduate School Of Engineering Tohoku Universit

• Miura Takako

  Department Of Applied Chemistry And Biotechnology Niihama National College Of Technology

• Tanaka S

  The University Of Tokyo Graduate School Of Engineering Department Of Quantum Engineering And Systems

• Iwasaki Tomohiko

  Department Of Cardiology Heart Institute Of Japan Tokyo Women's Medical College

• Win Than

  Department Of Applied Bioscience Graduate School Of Agriculture Hokkaido University

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