Eur. Phys. J. Appl. Phys.
Volume 24, Number 2, November 2003
|Page(s)||95 - 113|
|Published online||20 October 2003|
Fast ignition schemes for inertial confinement fusion
LPGP (UME-CNRS 8578), Bât. 210,
UPS, 91405 Orsay Cedex, France
Corresponding author: email@example.com
Revised: 17 January 2003
Accepted: 12 June 2003
Published online: 20 October 2003
The controlled production of a local hot spot in supercompressed deuterium + tritium fuel is examined in details. Relativistic electron beams (REB) in the MeV and proton beams in the few tens MeV energy range produced by PW-lasers are respectively considered. A strong emphasis is given to the propagation issues due to large density gradients in the outer core of compressed fuel. A specific attention is also paid to the final and complete particle stopping resulting in hot spot generation as well as to the interplay of collective vs. particle stopping at the entrance channel on the low density side in plasma target. Moreover, REB production and fast acceleration mechanisms are also given their due attention. Proton fast ignition looks promising as well as the wedged (cone angle) approach circumventing most of transport uncertainties between critical layer and hot spot. Global engineering perspectives for fast ignition scenario (FIS) driven inertial confinement fusion are also detailed.
PACS: 52.40.Mj – Particle beam interactions in plasmas / 52.35.Py – Macroinstabilities (hydromagnetic, e.g., kink, fire-hose, mirror, ballooning, tearing, trapped-particle, flute, Rayleigh-Taylor, etc.) / 34.50.Bw – Energy loss and stopping power
© EDP Sciences, 2003
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