Triple-humped fission barrier model for a new~(238)U neutron cross-section evaluation and first validations

M.J. Lopez Jimenez; B. Morillon; P. Romain

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Triple-humped fission barrier model for a new~(238)U neutron cross-section evaluation and first validations

机译：三隆峰裂变屏障模型用于新的〜（238）U中子截面评估和首次验证

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A new neutron-induced cross-section evaluation of ~(238)U from 1 keV up to 200 MeV has been performed using only nuclear reactions models. A new fission penetrability model taking into account a triple humped barrier has been developed. A clear improvement has been observed for K-effective validation tests (up to 30 MeV) with this new evaluation. This improvement is mainly due to a better treatment of the inelastic exit channel.

机译：仅使用核反应模型进行了新的中子诱导的〜（238）U从1 keV到200 MeV的截面评估。考虑到三重驼峰屏障，已经开发了一种新的裂变穿透性模型。通过这项新评估，已观察到K有效验证测试（最高30 MeV）的明显改善。这种改进主要归因于对非弹性出口通道的更好处理。

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来源
《Annals of nuclear energy》 |2005年第2期|p.195-213|共19页
作者
M.J. Lopez Jimenez; B. Morillon; P. Romain;
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CEA/DIF/DPTA/Service de Physique Nucleaire, B.P. 12, F-91680 Bruyeres-le-Chatel, France;

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正文语种 eng
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1. Fission cross-section measurement for the ~(238)U(n,f)~(89)Rb reaction induced by D-T neutrons [J] . Qiang Wang, Yafei Han, Luocheng Yang, Nuclear Instruments & Methods in Physics Research. B, Beam Interactions with Materials and Atoms . 2020,第Apra15期

机译：D-T中子引起的〜（238）U（n，f）〜（89）Rb反应的裂变截面测量
2. Fission cross-section measurement for U-238(n,f)(134) X-z reactions induced by D-T neutrons [J] . Niu Deqing, Zhang Zuoyi, Zhou Yong, Radiation Physics and Chemistry . 2019,第期

机译：由D-T中子诱导的U-238（n，f）（134）X-Z反应的裂变横截面测量
3. Prompt fission neutron multiplicity and spectra evaluation in the frame of the multi-modal fission model for Np-237(n, f) and U-238(n, f) [J] . Hambsch FJ., Oberstedt S., Vladuca G., Nuclear Physics, A: Journal Devoted to the Experimental Study of the Fundamental Constituents of Matter and Their Actions . 2002,第0期

机译：Np-237（n，f）和U-238（n，f）的多峰裂变模型框架中的瞬变裂变中子多重性和光谱评估
4. Measurement of neutron-induced fission cross-sections of Th-232, U-238, U-233 and Np-237 relative to U-235 from 1 MeV to 200 MeV [C] . O. A. Shcherbakov, A. V. Fomichev, A. Y. Donets, Proceedings of the Third specialists'meeting on high energy nuclear data . 1998

机译：从1 MeV到200 MeV测量Th-232，U-238，U-233和Np-237相对于U-235的中子裂变截面
5. Fission fragment mass distributions and total kinetic energy release of 235-uranium and 238-uranium in neutron-induced fission at intermediate and fast neutron energies. [D] . Duke, Dana L. 2015

机译：中，快中子能在中子诱发裂变中的235铀和238铀的裂变碎片质量分布和总动能释放。
6. Evaluation of models determined by neutron diffraction and proposed improvements to their validation and deposition [O] . Dorothee Liebschner, Pavel V. Afonine, Nigel W. Moriarty, -1

机译：对中子衍射确定的模型进行评估并对模型的验证和沉积提出改进建议
7. 234U(n,f) Model Description of Sub-barrier Fission Cross-section Resonances and Calculation of Prompt Neutron Emission Data [O] . Tudora A., Hambsch F.-J., Oberstedt S. 2013

机译：234U（n，f）次能垒裂变截面共振的模型描述和中子迅速发射数据的计算
8. Absolute Measurements of the exp 235 U and exp 238 U Fission Cross-Sections in the exp 252 Cf Fission Neutron Spectrum [R] . Adamov, V. M., Drapchinskij, L. V., Kudryavtsev, G. Y., 1982

机译：exp 252 Cf裂变中子谱中exp 235 U和exp 238 U裂变截面的绝对测量

Triple-humped fission barrier model for a new~(238)U neutron cross-section evaluation and first validations

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