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DTSTART;TZID=Europe/Berlin:20230621T160000
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DTSTAMP:20260505T134011
CREATED:20250130T104318Z
LAST-MODIFIED:20250402T074950Z
UID:10000079-1687363200-1687366800@laserlab-europe.eu
SUMMARY:Laserlab-Europe Talk: A multi-MeV Alpha Particle Source via Proton-Boron fusion driven by a 10-GW Tabletop Laser
DESCRIPTION:Speaker: Valeria Istokskaia (ELI Beamlines\, Czech Republic)  \n			\n				Watch the Talk\n			\n				\n				\n				\n				\n				Nuclear fusion between protons and boron-11 nuclei has undergone a revival of interest thanks to the rapid progress in pulsed laser technology. Potential applications of such reaction range from controlled nuclear fusion to radiobiology and cancer therapy. A laser-driven fusion approach consists in the interaction of high-power\, high-intensity pulses with H- and B-rich targets. We report on a pioneering experiment exploiting proton-boron fusion in CH/BN targets to obtain high-energy alpha particle beams (up to 5 MeV) using a compact approach and a tabletop laser system with a peak power of ~10 GW\, which can operate at high-repetition rate (up to 1 kHz). The secondary resonance in the cross section of proton-boron fusion (~150 keV in the center-of-mass frame) is exploited for the first time using a laser-based approach. The generated alpha particles are characterized in terms of energy\, flux\, and angular distribution using solid-state nuclear-track detectors\, demonstrating a flux of ~105 particles per second at 10 Hz\, and ~106 per second at 1 kHz. Numerical hydrodynamic and particle-in-cell simulations support our experimental findings. Potential impact of our approach on future spread of ultra-compact\, multi-MeV alpha particle sources driven by moderate intensity (1016-1017 W/cm2) laser pulses is anticipated.    
URL:https://laserlab-europe.eu/event/laserlab-europe-talk-a-multi-mev-alpha-particle-source-via-proton-boron-fusion-driven-by-a-10-gw-tabletop-laser/
LOCATION:Online
CATEGORIES:laserlab-europe events,laserlab-europe talk
ATTACH;FMTTYPE=image/png:https://laserlab-europe.eu/wp-content/uploads/2024/11/lle-talk_2023-06_istokskaia_proton-boron.png
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