Theory of fast electron transport for fast ignition
Abstract
Fast ignition (FI) inertial confinement fusion is a variant of inertial fusion in which DT fuel is first compressed to high density and then ignited by a relativistic electron beam generated by a fast (<20 ps) ultraintense laser pulse, which is usually brought in to the dense plasma via the inclusion of a reentrant cone. The transport of this beam from the cone apex into the dense fuel is a critical part of this scheme, as it can strongly influence the overall energetics. Here we review progress in the theory and numerical simulation of fast electron transport in the context of FI. Important aspects of the basic plasma physics, descriptions of the numerical methods used, a review of ignitionscale simulations, and a survey of schemes for controlling the propagation of fast electrons are included. Considerable progress has taken place in this area, but the development of a robust, highgain FI ‘point design’ is still an ongoing challenge.
 Publication:

Nuclear Fusion
 Pub Date:
 May 2014
 DOI:
 10.1088/00295515/54/5/054003
 arXiv:
 arXiv:1304.1040
 Bibcode:
 2014NucFu..54e4003R
 Keywords:

 Physics  Plasma Physics
 EPrint:
 78 pages, 27 figures, review article submitted to Nuclear Fusion