PIC simulations of laser-induced proton acceleration by resonant nanoantennas for fusion
arxiv(2023)
摘要
Rapid recent development in laser technology and methods learned from
relativistic heavy ion physics led to new possibilities for fusion. Using a
Hydrogen rich UDMA-TEGDMA polymer fusion target, laser irradiation ionizes the
target. If we implant nanoantennas into the target resonating to the laser
light frequency massive number of electrons of the ionized plasma resonate
within the nanoantenna forming a so called nanoplasmonic wave. Our kinetic
model simulation with a Hydrogen target indicates that the field of these
resonating electrons attracts and accelerates the surrounding protons of the
plasma to multi-MeV energy. These protons are then energetic enough to achieve
nuclear transmutation and fusion reactions. Without resonating nanoantenna
there is no such collective proton acceleration, no energetic protons, and
nuclear reactions at 30 mJ laser pulse energy.
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