Induced nuclear reactions: processes – systems – and elements – Nuclear fusion – Inertial confinement
Patent
1987-10-14
1988-08-02
Behrend, Harvey E.
Induced nuclear reactions: processes, systems, and elements
Nuclear fusion
Inertial confinement
376104, 376105, G21B 100
Patent
active
H00005088
ABSTRACT:
Hybrid-drive implosion systems (20,40) for ICF targets (10,22,42) are described which permit a significant increase in target gain at fixed total driver energy. The ICF target is compressed in two phases, an initial compression phase and a final peak power phase, with each phase driven by a separate, optimized driver. The targets comprise a hollow spherical ablator (12) surroundingly disposed around fusion fuel (14). The ablator is first compressed to higher density by a laser system (24), or by an ion beam system (44), that in each case is optimized for this initial phase of compression of the target. Then, following compression of the ablator, energy is directly delivered into the compressed ablator by an ion beam driver system (30,48) that is optimized for this second phase of operation of the target. The fusion fuel (14) is driven, at high gain, to conditions wherein fusion reactions occur. This phase separation allows hydrodynamic efficiency and energy deposition uniformity to be individually optimized, thereby securing significant advantages in energy gain. In additional embodiments, the same or separate drivers supply energy for ICF target implosion.
REFERENCES:
Nature, 239, (1972) pp. 139-142, Nuckolls et al.
Phys. Rev. Lett. 35, (1975), pp. 848-851, Clauser.
Physics Letters, 114A, (1986), pp. 458-464, Mark.
Behrend Harvey E.
Carnahan I. E.
Hightower Judson R.
Roth Gary C.
The United States of America as represented by the United States
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