Home / Store / Journals / Electronic Articles / Fusion Science and Technology / Volume 49 / Number 3 / Pages 399-411
B. Grant Logan, Roger O. Bangerter, Debra A. Callahan, Max Tabak, Markus Roth, L. John Perkins, George Caporaso
Fusion Science and Technology / Volume 49 / Number 3 / Pages 399-411
Format:electronic copy (download)
Critical issues and ion beam requirements are explored for fast ignition using ion beams to provide fuel compression using indirect drive and to provide separate short-pulse ignition heating using direct drive. Several ion species with different hohlraum geometries are considered for both accelerator-produced and laser-produced ion ignition beams. Ion-driven fast ignition targets are projected to have modestly higher gains than with conventional heavy ion fusion and may offer some other advantages for target fabrication and for use of advanced fuels. However, much more analysis and additional experiments are needed before conclusions can be drawn regarding the feasibility for meeting the ion beam transverse and longitudinal emittances, focal spots, pulse lengths, and target standoff distances required for ion-driven fast ignition.
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