Influence of the Asynchronous Multibeam Irradiation of a Spherical Fusion Target by Megajoule Laser Beams on the Efficiency of Thermonuclear Burning

• Published in: Journal of experimental and theoretical physics 2018-09, Vol.127 (3), p.539-548
• Main Authors: Bel’kov, S. A., Bondarenko, S. V., Vergunova, G. A., Garanin, S. G., Gus’kov, S. Yu, Demchenko, N. N., Doskoch, I. Ya, Kuchugov, P. A., Zmitrenko, N. V., Rozanov, V. B., Stepanov, R. V., Yakhin, R. A.
• Format: Article
• Language: English
• Subjects: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Classical and Quantum Gravitation; COMPRESSION; Computer simulation; COMPUTERIZED SIMULATION; Control methods; Dependence; EFFICIENCY; Elementary Particles; FUELS; HYDRODYNAMICS; Ignition; Irradiation; Laser beam heating; LASER RADIATION; Lasers; Nonlinear; Nonuniformity; Nuclear fuels; Particle and Nuclear Physics; Physics; Physics and Astronomy; PULSES; Quantum Field Theory; Relativity Theory; Soft Matter Physics; Solid State Physics; SPHERICAL CONFIGURATION; Statistical; Synchronism; SYNCHRONIZATION; THERMONUCLEAR IGNITION; THERMONUCLEAR REACTORS
• ISSN: 1063-7761; 1090-6509
• DOI: 10.1134/S1063776118080137

We have studied the dependence of the compression and burning of a spherical direct-drive fusion target on the nonuniformity of its heating caused by the asynchronous arrival of laser beams under conditions of irradiation by a modern laser system with a total energy of 2 MJ intended for the fuel ignition and fusion energy evolution equal to the absorbed laser energy. The investigation is performed by numerical simulation based on 2D hydrodynamic codes. It is established that the limiting permissible spread of the moments of laser pulse action on the target for ignition significantly exceeds the level that can be ensured using modern methods of controlled temporal synchronization of laser beams.