Fast ignition of inertial fusion targets by laser-driven carbon beams

Details Fast ignition of inertial fusion targets by laser-driven carbon beams Fast ignition of inertial fusion targets by laser-driven carbon beams

2009-09-02

arxiv.org/abs/0909.0342v2

Physics of Plasmas 16, 102701 (2009)

Physics

Plasma Physics

8 pages, 10 figures, published in Physics of Plasmas

Scientific paper

10.1063/1.3234248

Two-dimensional simulations of ion beam driven fast ignition are presented. Ignition energies of protons with Maxwellian spectrum and carbon ions with quasimonoenergetic and Maxwellian energy distributions are evaluated. The effect of the coronal plasma surrounding the compressed deuterium-tritium is studied for three different fuel density distributions. It is found that quasi- monoenergetic ions have better coupling with the compressed deuterium-tritium and substantially lower ignition energies. Comparison of quasimonoenergetic carbon ions and relativistic electrons as ignitor beams shows similar laser energy requirements, provided that a laser to quasimonoenergetic carbon ion conversion efficiency around 10% can be achieved.

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