Fast ignition by detonation in a hydrodynamic flow |
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Authors: | S Yu Gus’kov and M Murakami |
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Institution: | (1) P. N. Lebedev Physical Institute, Russian Academy of Sciences, Leninskii Prospect 53, Moscow, 119991, Russia;(2) Institute of Laser Engineering, Osaka University, Suita, Osaka, Japan |
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Abstract: | A general concept of fast ignition by a hydrodynamic pulse is developed. The main statements of the concept are formulated
having in mind the need to ignite the pre-compressed thermonuclear fuel of the inertial confinement fusion (ICF) target. Initially,
combustion must be initiated inside the hydrodynamic flow during its action on the target. The conditions for propagating
a self-sustaining thermonuclear-detonation wave from an igniter on the thermonuclear fuel of the ICF-target must be provided.
For this, the deuterium–tritium (DT) igniter placed in the forward part of the hydrodynamic flow should not only be heated
up to thermonuclear temperature, but also compressed to a density close to the density of the ICF-target fuel. It is shown
that the detonation of the multilayer conical target (containing DT-ice and a heavy pusher) enables fast ignition of the ICF
target fuel of 200–500 g/cm3 density at an implosion velocity of 300–500 km/s. |
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Keywords: | inertial confinement fusion fast ignition ICF target detonation wave hydrodynamics flow |
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