Expansion of the surrogate method to measure the prompt fission neutron multiplicity for Pu-241

Akindele O. A.; Alan B. S.; Burke J. T.; Casperson R. J.; Hughes R. O.; Koglin J. D.; Kolos K.; Norman E. B.; Ota S.; Saastamoinen A.

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Expansion of the surrogate method to measure the prompt fission neutron multiplicity for Pu-241

机译：扩展替代方法测量PU-241的迅速裂变中子多样性

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Fission neutron multiplicity data are imperative for nuclear models that support criticality safety, nuclear nonproliferation, and stockpile stewardship. This work presents the first experimental measurement to determine the average neutron multiplicity ((nu) over bar) and the neutron multiplicity distribution using a surrogate reaction. Pu-241 has a short half-life of 14.3 yr. To circumvent experimental difficulties, inelastic scattering of 53.96-MeV alpha particles on Pu-242 served as a surrogate for Pu-241(n, f). The present text reports and discusses the average neutron multiplicity, in addition to the neutron multiplicity moments and distribution for equivalent neutron energies up to 20 MeV. The (nu) over bar measured in this experiment agrees with previous measurements until 12 MeV, where discrepancies arise due to preequilibrium neutron emission.

机译：裂变中子多重数据对于支持临界安全，核不扩散和储存管理管道的核模型是必不可少的。该工作呈现了第一个实验测量，以确定使用替代反应的平均中子多重（（Nu）上的节奏）和中子多重分布。 PU-241的半衰期为14.3毫升。为了规避实验性困难，PU-242上的53.96mmVα颗粒的无弹性散射用作PU-241（N，F）的替代物。本文报告并讨论了平均中子多样性，除了中子多重矩和分布到高达20mev的等效中子能量。在该实验中测量的（Nu）对杆同意之前的测量，直到12 MeV，其中由于PreSquibibibimlium排放而产生差异。

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《Physical review, C》 |2019年第5期|共7页
作者
Akindele O. A.; Alan B. S.; Burke J. T.; Casperson R. J.; Hughes R. O.; Koglin J. D.; Kolos K.; Norman E. B.; Ota S.; Saastamoinen A.;
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作者单位

Univ Calif Berkeley Dept Nucl Engn Berkeley CA 94720 USA;

Lawrence Livermore Natl Lab Livermore CA 94550 USA;

Lawrence Livermore Natl Lab Livermore CA 94550 USA;

Lawrence Livermore Natl Lab Livermore CA 94550 USA;

Lawrence Livermore Natl Lab Livermore CA 94550 USA;

Lawrence Livermore Natl Lab Livermore CA 94550 USA;

Lawrence Livermore Natl Lab Livermore CA 94550 USA;

Univ Calif Berkeley Dept Nucl Engn Berkeley CA 94720 USA;

Texas A&

M Univ Cyclotron Inst College Stn TX 77840 USA;

Texas A&

M Univ Cyclotron Inst College Stn TX 77840 USA;

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正文语种 eng
中图分类原子核物理学、高能物理学;
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1. Expansion of the surrogate method to measure the prompt fission neutron multiplicity for Pu-241 [J] . Akindele O. A., Alan B. S., Burke J. T., Physical review, C . 2019,第5期

机译：扩展替代方法测量PU-241的迅速裂变中子多样性
2. Determining the average prompt-fission-neutron multiplicity for Pu-239(n, f) via a Pu-240(alpha, alpha'f) surrogate reaction [J] . Physical review, C . 2019,第6期

机译：通过PU-240（α，α'f）替代反应确定PU-239（N，F）的平均迅速裂变 - 中子多重性
3. Current Issues in Nuclear Data Evaluation Methodology: ~(235)U Prompt Fission Neutron Spectra and Multiplicity for Thermal Neutrons [J] . A. Trkov, R. Capote, V.G. Pronyaev Nuclear Data Sheets . 2015,第jana期

机译：核数据评估方法学的当前问题：〜（235）U瞬变裂变中子谱和热中子的多重性
4. Measurements of Prompt Neutron Multiplicity Distributions in Correlation with Mass-Energy Distribution of Fission Fragments in Spontaneous Fission of ~(252)Cf, ~(244)Cm and ~(248)Cm [C] . Valeri Kalinin, Victor Dushin, Franz-Josef Hambsch, International Conference on Nuclear Data for Science and Technology . 2002

机译：促进中子多重分布在〜（252）Cf，〜（244）cm和〜（248）厘米的裂变片段质量裂缝裂变片段质量分布相关性
5. Expansion of the Surrogate Method to Measure (n,xn) Cross Sections and Fission Neutron Multiplicity Distributions [D] . Akindele, Oluwatomi A. 2018

机译：扩展了用于测量（n，xn）截面和裂变中子多重分布的替代方法
6. A new method for measuring the neutron lifetime using an in situ neutron detector [O] . C. L. Morris, E. R. Adamek, L. J. Broussard, -1

机译：一种使用原位中子探测器测量中子寿命的新方法
7. Expansion of the surrogate method to measure the prompt fission neutron multiplicity for Pu241 [O] . O. A. Akindele, B. S. Alan, J. T. Burke, 2019

机译：扩展替代方法以测量PU241的提示裂变中子量

Expansion of the surrogate method to measure the prompt fission neutron multiplicity for Pu-241

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