Low Fuel Convergence Path to Direct-Drive Fusion Ignition
Author(s)
Molvig, Kim; Schmitt, Mark J.; Albright, B. J.; Dodd, E. S.; Hoffman, N. M.; McCall, G. H.; Ramsey, S. D.; ... Show more Show less
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A new class of inertial fusion capsules is presented that combines multishell targets with laser direct drive at low intensity (2.8×10¹⁴ W/cm²) to achieve robust ignition. The targets consist of three concentric, heavy, metal shells, enclosing a volume of tens of μg of liquid deuterium-tritium fuel. Ignition is designed to occur well “upstream” from stagnation, with minimal pusher deceleration to mitigate interface Rayleigh-Taylor growth. Laser intensities below thresholds for laser plasma instability and cross beam energy transfer facilitate high hydrodynamic efficiency (∼10%).
Date issued
2016-06Department
Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
Physical Review Letters
Publisher
American Physical Society
Citation
Molvig, Kim; Schmitt, Mark J. et al. "Low Fuel Convergence Path to Direct-Drive Fusion Ignition." Physical Review Letters 116, 255003 (June 2016): 1-5 © 2016 American Physical Society
Version: Final published version
ISSN
0031-9007
1079-7114