Fusion/Fission hybrid

As the course proceeded a marked consensus developed on the desirability of giving more attention to the fusion/fission hybrid. There appeared to be an earlier, practical application which would inject some necessary objectivity into the fusion programme. 

As already discussed, both D-T and Cat-D plants potentially face a difficult economic competition unless the power density of the blanket can be raised. Materials limitations make that a most perplexing task. This, plus the desire to provide an earlier payoff for fusion suggest that fusion-fission hybrid reactors could be a logical goal for near-term fusion development. Indeed, economics could force the hybrid route. Still a worry expressed by some is that this route will unduely delay the development of pure fusion. However, if a semi-catalyzed-deuterium (SCD) hybrid is employed, it could generate He for satellites. Then the satellites would produce electricity, and, being located near the... 

Giinay, M., arer, B., Kasap, H., 2014. Contributions of each isotope in some fluids on neutronic performance in a fusion—fission hybrid reactor a Monte Carlo method. Indian Journal of Physics 88 (8), 861-866. 

There exists little literature dealing with the adaption of a PF as the nuclear core of a hybrid fusion-fission system.. One of them /13/ considers a symbiotic system and is probably the most realistic approach as blanket... 

Table V summarizes estimatesL39,42J for the fuel production-ability of two types of producing hybrids, with various fuel cycles for the fusion drivers. One of the Hybrid Fuel Factories (HFFs) uses a fission-suppressed blanket having beryllium for neutron multiplication and moderation, while the other uses a fast-fission blanket. The figure-of-merit used for measuring the fuel production-ability of the HFFs is F/W - the net number of fissile atoms they can produce per unit thermal energy (resulting from fusion, fission and other nuclear reactions) that must be removed from the plant. The fusion devices driving these HFFs are assumed to be ignited.

In the third step of the synthesis route, a monomer miniemulsion with 20 wt.% dispersed phase is prepared and added to the water-based ferrofluid containing the magnetite aggregates, as obtained above. This mixture is then cosonicated, and the controlled fission/fusion process which is characteristic for miniemulsification is expected to destroy all aggregates and liquid droplets. As a consequence, only hybrid particles composed of magnetite and monomer should remain, presumably since this species shows the highest stability. Polymerization of the monomer is then started for all the samples presented here by adding an initiator. 

At the present time, the long linear open field line systems discussed above do not appear to be particularly attractive for pure fusion systems, due primarily to high axial particle and/or energy loss rates as well as other difficulties relating to both physics and technology issues. As fission-fusion hybrid systems the outlook is not so pessimistic and, indeed, linear systems possess virtues that may make them quite attractive for such an application. 

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