Features of a point design for fast ignition

Conference · Mon Oct 26 00:00:00 EDT 2009

DOI:https://doi.org/10.1088/1742-6596/244/2/022066· OSTI ID:967744

Tabak, M; Clark, D; Town, R J; Key, M H; Amendt, P; Ho, D; Meeker, D J; Shay, H D; Lasinski, B F; Kemp, A; Divol, L; Mackinnon, A J; Patel, P; Strozzi, D; Grote, D P

Fast Ignition is an inertial fusion scheme in which fuel is first assembled and then heated to the ignition temperature with an external heating source. In this note we consider cone and shell implosions where the energy supplied by short pulse lasers is transported to the fuel by electrons. We describe possible failure modes for this scheme and how to overcome them. In particular, we describe two sources of cone tip failure, an axis jet driven from the compressed fuel mass and hard photon preheat leaking through the implosion shell, and laser prepulse that can change the position of laser absorption and the angular distribution of the emitted electrons.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 967744
• Report Number(s): LLNL-PROC-418768; TRN: US0904540
• Resource Relation: Journal Volume: 244; Journal Issue: 2; Conference: Presented at: Inertial Fusion Science and Applications, San Francisco, CA, United States, Sep 05 - Sep 10, 2009
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUMM MECHANICS
GENERAL PHYSICS
42 ENGINEERING
70 PLASMA PHYSICS AND FUSION
ABSORPTION
ANGULAR DISTRIBUTION
CONES
DESIGN
ELECTRONS
HEATING
IGNITION
IMPLOSIONS
LASERS
PHOTONS