Abstract
The possibility of using the ultrashort ion bunches produced by circularly polarized laser pulses to drive a source of fusion neutrons with sub-optical cycle duration is discussed. A two-sided irradiation of a deuterated thin foil target produces two counter-moving ion bunches, whose collision produces an ultrashort neutron burst. Using particle-in-cell simulations and analytical modeling, it is calculated that, for intensities of a few 1019 W cm-2, more than 103 neutrons per Joule may be producedwithin a time shorter than one femtosecond. Another scheme based on a layered deuterium-tritium target is outlined.
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24.90.+d; 29.25.Dz; 52.38.ph; 52.50.Jm
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Macchi, A. A femtosecond neutron source. Appl. Phys. B 82, 337–340 (2006). https://doi.org/10.1007/s00340-005-2092-y
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DOI: https://doi.org/10.1007/s00340-005-2092-y