Abstract
The yields of alpha particles and neutrons from the promising 11B(p, 3α) fusion reaction and the reference 11B(p, n)11C nuclear reaction, respectively, which are induced by intense picosecond laser radiation with an intensity of 2 × 1018 W/cm2, have been numerically simulated. The numerical simulation of the interaction of a laser pulse with a primary aluminum target has been carried out in the two-dimensional xz version of the KARAT PIC (particle-in-cell) code in two stages. First, the proton flux from the back side of the Al target on which the laser pulse is incident has been calculated. Second, 11B(p, 3α) and 11B(p, n)11C reactions induced by the proton beam in the boron target have been simulated. The calculations have shown that the total yield of alpha particles is Nα = 7.2 × 108, the number of alpha particles with energies above 0.5 MeV that reach a detector is 2 × 107, which is 2.8% of their total yield, and the total yield of neutrons is Yn = 105. The numerical simulation gives the yields of alpha particles and neutrons from the 11B(p, 3α) and 11B(p, n)11C reactions per pulse that are in sufficiently good agreement with experimental data.
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ACKNOWLEDGMENTS
We are grateful to program 10 “Experimental Laboratory Astrophysics and Geophysics,” National Center for Physics and Mathematics for organization of stimulating discussions.
Funding
This work was supported by the Ministry of Education of the Russian Federation (state assignment no. AAAA-A20-120061890084-9 “Physics of Nanostructured Materials: Fundamental Research and Applications in Materials Science, Nanotechnologies, and Photonics”), partially by the Russian Foundation for Basic Research (project no. 18-29-21021), and by the Ministry of Science and Higher Education of the Russian Federation (project no. FSMG-2021-0005).
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Translated by R. Tyapaev
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Andreev, S.N., Belyaev, V.S., Matafonov, A.P. et al. Numerical Simulation of the Yield of α Particles and Neutrons from the 11B(p, 3α) and 11B(p, n)11C Nuclear Reactions Induced by Intense Picosecond Laser Radiation. J. Exp. Theor. Phys. 135, 26–34 (2022). https://doi.org/10.1134/S1063776122070019
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DOI: https://doi.org/10.1134/S1063776122070019