A Femtosecond Neutron Source

Details A Femtosecond Neutron Source A Femtosecond Neutron Source

2005-05-20

arxiv.org/abs/physics/0505140v2

Applied Physics B 82, 337 (2006)

Physics

Plasma Physics

15 pages, 3 figures

Scientific paper

10.1007/s00340-005-2092-y

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 thin foil deuterated target produces two countermoving ion bunches, whose collision leads to an ultrashort neutron burst. Using particle-in-cell simulations and analytical modeling, it is evaluated that, for intensities of a few $10^{19} W cm^{-2}$, more than $10^3$ neutrons per Joule may be produced within a time shorter than one femtosecond. Another scheme based on a layered deuterium-tritium target is outlined.

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