A Femtosecond Neutron Source
نویسنده
چکیده
The possibility to use 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-side irradiation of a deuterated thin foil target produces two countermoving ion bunches, whose collision produces an ultrashort neutron burst. Using particle-in-cell simulations and analytical modeling, it is evaluated that, for intensities of a few 10 W cm, more than 10 neutrons per Joule may be produced within a time shorter than one femtosecond. Another scheme based on a layered deuterium-tritium target is outlined. PACS: 24.90.+d, 29.25.Dz, 52.38.ph, 52.50.Jm
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