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The net generation of energy by inertial confinement fusion requires the use of beam-target systems which allow high target gain values to be achieved. In fact the whole subject area is extremely complex and this article simply identifies the general aspects and tendencies of the relationship between symmetry and energy efficiency. The article also presents some of the results obtained recently in experiments carried out by ENEA. The article examines the energy cycle of the target and presents a fuel gain model. It also introduces the various aspects of the symmetry-efficiency-gain relationship as well as estimating the gain of targets for fusion with heavy indirect radiance ions. Some simple analytical models allow these relationships to be understood as well as allowing reasonable estimates of the gain of certain targets to be made. These provide useful indications both for programming experiments and for the reactor target project.

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Authors: ATZENI S, ENEA, Centro Ricerche Energia Frascati, Roma (IT);GUERRIERI A, ENEA, Centro Ricerche Energia Frascati, Roma (IT);TEMPORAL M, ENEA, Centro Ricerche Energia Frascati, Roma (IT)
Bibliographic Reference: Article: Il Nuovo Saggiatore, Vol. 8 (1992) No. 2, pp. 34-47
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