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Physics Plasma Physics And Fusion Technology

Magneto-Inertial Approach to Direct-Drive Laser Fusion

Authors: Gotchev, O.V. Jang, N.W. Knauer, J.P. Barbero, M.D. Betti, R. Li, C.K. Petrasso, R.D.
 
Abstract: A magneto-inertial fusion (MIF) approach to inertial confinement fusion (ICF), based on laser-driven magnetic-flux compression (LDFC) is described. This approach benefits from both the high-energy-density characteristic to ICF and the thermal insulation of the fuel by magnetic fields, typical of MFE. The reduction in thermal-conduction losses in the hot spot of an imploding target that has trapped and amplified a pre-seeded magnetic flux leads to increased hot-spot temperatures at lower implosion velocities than required in conventional ICF. This can lead to ignition designs with larger energy gains. This work describes the main concept and the use of a compact magnetic-pulse system to seed a macroscopic magnetic field into cylindrical DD-filled targets, which are radially driven with the OMEGA laser.
Publication Date: 08 Feb 2008
Report numbers: DOE/SF/19460-803
DOE Contract number: FC52-92SF19460
Resource Type: Journal Article
Resource Relation: Journal: Journal of Fusion Energy; Journal Volume: 25
Research Organizations: Laboratory for Laser Energetics, University of Rochester
Sponsoring Organizations: USDOE
Country of Publication: United States
Language: English
Keywords relating to this report:
COMPRESSION
HOT SPOTS
IGNITION
IMPLOSIONS
INERTIAL CONFINEMENT
LASERS
MAGNETIC FIELDS
MAGNETIC FLUX
SEEDS
TARGETS
THERMAL CONDUCTION
THERMAL INSULATION
Related subjects:
HIGH-BETA PLASMAS
INERTIAL CONFINEMENT
MAGNETIC INSULATION