Neutron generation by laser irradiation of CD4 clusters

Physics

Scientific paper

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Laser-Plasma Acceleration Of Electrons And Ions, X-Ray, Gamma-Ray, And Particle Generation, Plasma Production And Heating By Laser Beams, Theory, Design, And Computerized Simulation, Fusion And Fusion-Fission Reactions

Scientific paper

It was shown in 1999 that D2 cluster explosion under ultrashort intense laser irradiation can lead to ion energies sufficient to drive nuclear fusion reactions [Ditmire et al. Nature 398, 491]. We show how the use of molecular clusters allows to further enhance the ionic acceleration, allowing one to reach optimal fusion cross sections. A new low density high energy regime is described, in which fusion occurs via a spallation-like process. The process increases with laser intensity up to the relativistic threshold, at which the neutron production is overwhelmed by gamma production resulting from electron acceleration. .

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