Multiplicities and Spectra of Prompt-Fission Neutrons up to 200 MeV

机译：迅速裂变中子的多重性和光谱高达200 MeV

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Statistical model calculations were performed to interpret the prompt-fission neutron spectra (PFNS) from 238U(n,f) and 232Th(n,f) reactions for the incident neutron energies En ~ 6–18 MeV. Spectra of the pre-fission (pre-saddle) (n,xnf) reaction neutrons, were calculated with the Hauser-Feshbach statistical model, fission and (n,xn) reaction cross-section data being described consistently. The dependence of these contributions on the target nuclide fissility and incident neutron energy is shown to be pronounced in the PFNS shapes. A model is proposed to calculate the average number of prompt-fission neutrons up to 200 MeV; contributions of pre- and post-fission neutrons are estimated.

机译：进行统计模型计算，以从238U（N，F）和232th（N，F）反应中的迅速变性中子谱（PFN）解释入射中子能量EN〜6-18 MeV的235（n，f）反应。用Hauser-Feshbach统计模型，裂变和（N，XN）反应横截面数据计算裂变预裂变（预鞍）（N，XNF）反应中子的光谱。这些贡献对目标核素裂变和入射中子能量的依赖性显示在PFNS形状中发音。提出了一种模型来计算高达200兆的平均迅速裂变中子数量;估计预裂殖中子和裂变后中子的贡献。

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《International Conference on Nuclear Data for Science and Technology》|2005年||共4页
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V. M. Maslov; N. V. Kornilov; A. B. Kagalenko; N. A. Tetereva;
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1. Comment on 'Neutron Multiplicity in the Fission of ~(238)U and ~(235)U with Neutrons up to 200 MeV' [J] . N. V. Kornilov, F.-J. Hambsch Physical review letters . 2008,第3期

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2. Neutron Multiplicity in the Fission of ~(238)U and ~(235)U with Neutrons up to 200 MeV [J] . T. Ethvignot, M. Devlin, H. Duarte, Physical review letters . 2005,第5期

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3. First Results on 238U(n,f) Prompt Fission Neutron Spectra from 1 to 200 MeV incident neutron energy [J] . Paola Marini, Benoit Laurent, Gilbert Belier, EPJ Web of Conferences . 2018,第10期

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机译：迅速裂变中子的多重性和光谱高达200 MeV
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Multiplicities and Spectra of Prompt-Fission Neutrons up to 200 MeV

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