Multiphoton fusion of light nuclei in intense laser fields
arxiv(2023)
Abstract
We investigate the fusion cross sections of light nuclei in the presence of
linearly polarized intense laser fields. By combining the Coulomb-Volkov
solutions with the complex spherical square-well nuclear potential, we derive
an explicit formulation of the multiphoton cross section in a self-consistent
manner. Our analysis is specifically focused on deuteron-triton (DT) and
proton-boron (p^11 B) fusion reactions, both of which have garnered
widespread attention. The theoretical results reveal that, under conditions of
longer laser wavelengths and lower incident particle kinetic energies, a few
thousands of photons can participate in the fusion reactions, resulting in a
substantial enhancement of fusion cross sections by almost ten orders of
magnitude. We elucidate the multiphoton mechanism underlying these findings and
discuss their implications.
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