Optimization of the Yield of Low-Threshold Nuclear Reactions under Action of Protons Accelerated Using Terawatt Femtosecond Laserстатья
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Дата последнего поиска статьи во внешних источниках: 20 февраля 2024 г.
Аннотация:The paper consider the possibility to execute nuclear reactions nuclear reactions with lowenergy threshold by means of terawatt femtosecond laser systems, exemplified by the 11B(p, α)2α and7Li(p, n)7Be reactions used for neutronless thermonuclear synthesis and production of neutron beams.On the basis of the literature data on the dependences of the average energy and cutoff energy in thespectrum of laser-accelerated protons on the intensity of laser radiation and laser pulse energy, theestimate of the anticipated number of registered events depending on the laser without emission intensityis obtained in the intensity range achievable for compact tabletop laser systems of terawatt powerlevel. It is shown that the optimal intensities for observing the considered reactions lie in the range(1–5) × 1019 W/cm2, whereas the total number of secondary particles per 1 TW of peak power canreach 106 and 108 for the 11B(p, α)2α and 7Li(p, n)7Be reactions, respectively.