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- W141819504 abstract "Theoretical considerations of fission of systems with high angular momenta are usually made in the framework of the rotating liquid drop model. The most stringent tests of this theory involve studies of excitation functions for evaporation residue products. At present there is no evidence for the survival of any rotating system which is predicted not to have a fission barrier. The extent to which the vanishing fission barrier imposes a limit on evaporation residue cross sections will be discussed in this review with reference to several cases, ranging from very light systems, such as /sup 14/N + /sup 12/C to medium mass systems, such as /sup 86/Kr + /sup 65/Cu. The prevalence of deeply inelastic processes in heavy ion reactions poses a problem for arriving at an operational definition of heavy-ion-induced fission. This in turn makes it difficult to define fusion of complex nuclei. While some yield at symmetric mass divisions is usually observed and while the products in this region often have fission-like kinetic energies and even angular distributions, indications are that in most cases tails of strongly damped distributions are involved, rather than the fusion--fusion process. In some cases, there is strong evidence for the existence of amore » separate and distinct fission component. When excitation functions for both evaporation residue products and for well-characterized fission fragments are available, it is possible to carry out a statistical model analysis and extract values of the fission barrier. Beckerman and Blann have carried out such analyses and concluded that liquid drop fission barriers must be reduced by approximately 40% to reproduce experimental results. A critical appraisal of this conclusion is given. New results are introduced on data allowing a very stringent test of the theory of angular-momentum dependence of fission barriers. 40 references.« less" @default.
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- W141819504 date "1979-01-01" @default.
- W141819504 modified "2023-09-27" @default.
- W141819504 title "Heavy-ion-induced fission following fusion. [Review]" @default.
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