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Improved numerical simulation model for nuclear reaction rate calculations in high-speed plasma collisions

Published online by Cambridge University Press:  11 January 2024

Bo Zeng Open the ORCID record for Bo Zeng [Opens in a new window] ,
Zijia Zhao Open the ORCID record for Zijia Zhao [Opens in a new window] ,
Xiaohu Yang Open the ORCID record for Xiaohu Yang [Opens in a new window] ,
Shaowu Yang Open the ORCID record for Shaowu Yang [Opens in a new window]  and
Yanyun Ma Open the ORCID record for Yanyun Ma [Opens in a new window]
Bo Zeng
Affiliation:
Department of Physics, National University of Defense Technology, Changsha 410073, PR China
Zijia Zhao*
Affiliation:
Department of Physics, National University of Defense Technology, Changsha 410073, PR China
Xiaohu Yang*
Affiliation:
Department of Physics, National University of Defense Technology, Changsha 410073, PR China Collaborative Innovation Centre of IFSA, Shanghai Jiao Tong University, Shanghai 200240, PR China
Shaowu Yang
Affiliation:
Department of Physics, National University of Defense Technology, Changsha 410073, PR China
Yanyun Ma*
Affiliation:
Collaborative Innovation Centre of IFSA, Shanghai Jiao Tong University, Shanghai 200240, PR China College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, PR China
*
†Email addresses for correspondence: zhaozijia@nudt.edu.cn, xhyang@nudt.edu.cn, yanyunma@126.com
†Email addresses for correspondence: zhaozijia@nudt.edu.cn, xhyang@nudt.edu.cn, yanyunma@126.com
†Email addresses for correspondence: zhaozijia@nudt.edu.cn, xhyang@nudt.edu.cn, yanyunma@126.com
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Abstract

Beam–target reactions in fusion plasmas play an important role in both magnetic confinement fusion and inertial confinement fusion in the condition of low-density plasmas with high-velocity interactions. The traditional method for calculating beam–target reaction rate neglects the transport process of incident particles in inhomogeneous plasmas, leading to errors providing that the temperature and density in the transport path of incident particles vary obviously. An improved method considering the transport process is proposed in this paper to eliminate the deficiencies. Then the method is employed in high-speed plasma collision studies. When the initial plasma density and temperature are set to $0.5\,{\rm g}\,{\rm cm}^{-3}$ and 100 eV, it is found that the beam–target reaction rate calculated by the traditional method is almost identical to that by our method if the collision velocity is less than 600 km s$^{-1}$. However, the traditional method is not suitable for study as the collision velocity gets higher, inducing obvious differences, which can reach 70 % at 1000 km s$^{-1}$. The improved method will make large corrections to evaluate the importance of the non-negligible beam–target reaction for inertial confinement fusion schemes with large implosion velocity such as double-cone ignition and impact ignition, in which the high-speed plasmas collide with each other to realize plasma ignition.

Keywords

fusion plasmaintense particle beams

Information

Type
Research Article
Information
Journal of Plasma Physics , Volume 90 , Issue 1 , February 2024 , 905900102
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Copyright
Copyright © The Author(s), 2024. Published by Cambridge University Press

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