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Energy-dependent characteristics of prompt neutron anisotropic emission by 244Cm and 240Pu according to Monte Carlo simulations

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Abstract

It is well known that prompt neutrons from nuclear fissions show anisotropic emission properties that have been studied for nuclear safeguards purposes. However, for further practical applications, thorough investigation of those properties from diverse perspectives needs to be done. In the present work, the energy dependency of prompt neutron anisotropic emissions by 244Cm and 240Pu was investigated using Monte Carlo simulations. In the results, the asymmetry of prompt neutron angular distributions showed a dependency on neutron energy thresholds, and its characteristic tendency was confirmed for both nuclides.

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source in three-dimensional space. The longest circumference that corresponds to the probability of occurrence of a specific emission angle can be found in the order nb, na or nc, and nref or nd

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Acknowledgements

This study was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2018R1D1A1B07043515) and the Ministry of Science and ICT (NRF-2020M2C9A1068162), including the Nuclear Safety Research Program through the Korea Foundation Of Nuclear Safety (KoFONS) using financial resources granted by the Nuclear Safety and Security Commission (NSSC) of the Republic of Korea (2004024-0120-CG100). This study was also supported by the Research Base Construction Fund Support Program funded by Jeonbuk National University (2020).

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Authors and Affiliations

  1. Department of Quantum Energy Chemical Engineering, University of Science and Technology, 217 Gajeong-Ro, Yuseong-Gu, Daejeon, 34113, Republic of Korea

    Seonkwang Yoon & Ho-Dong Kim

  2. Nuclear Fuel Cycle Enabling Technology Research Division, Korea Atomic Energy Research Institute, 989 Daedeokdae-Ro, Yuseong-Gu, Daejeon, 34057, Republic of Korea

    Seonkwang Yoon, Young-Su Kim, Chaehun Lee & Ho-Dong Kim

  3. Department of Quantum System Engineering, Jeonbuk National University, 567 Baekjedae-Ro, Geumam il-Dong, Deokjin-Gu, Jeonju, 54896, Republic of Korea

    Hee Seo

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  1. Seonkwang Yoon
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Yoon, S., Seo, H., Kim, YS. et al. Energy-dependent characteristics of prompt neutron anisotropic emission by 244Cm and 240Pu according to Monte Carlo simulations. J Radioanal Nucl Chem 330, 481–491 (2021). https://doi.org/10.1007/s10967-021-07893-8

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