文章基本信息

标题：The role of fission in r-process nucleosynthesis
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作者：A. Kelic ; K.H. ; Schmidt 等
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2006
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：Fission can have an important influence on the termination of the r process and on the abundances of long-lived actinides, which are relevant for the determination of the age of the Universe. Fission could also influence the abundances of nuclei in the region A~90 and 130 due to fission cycling. In order to quantitatively understand the fission role in the r process, two important pieces of information are needed: the fission probabilities and mass- and charge-distributions of the fission fragments. Unfortunately, experimental information is only available for nuclei in a limited region of the nuclide chart, and for heavy r-process nuclei one has to rely on theoretical predictions. This manuscript reviews the status of present experimental and theoretical knowledge on some aspects of fission which are important input for the r-process calculations.