Calculations of fission rates for r-process nucleosynthesis
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Author
Panov, I.
Kolbe, E.
Pfeiffer, B.
Rauscher, T.
Kratz, K.L.
Thielemann, Friedrich-Karl
Attention
2299/10373
Abstract
Fission plays an important role in the r-process which is responsible; not only for the yields of transuranium isotopes, but may have a strong influence on the formation of the majority of heavy nuclei due to fission recycling. We present calculations of beta-delayed and neutron-induced fission rates, taking into account different fission barriers predictions and mass formulae. It is shown that an increase of fission barriers results naturally in a reduction of fission rates, but that nevertheless fission leads to the termination of the r-process. Furthermore, it is discussed that the probability of triple fission could be high for A > 260 and have an effect on the formation of the abundances of heavy nuclei. Fission after beta-delayed neutron emission is discussed as well as different aspects of the influence of fission upon r-process calculations
Publication date
2005-01-24Published in
Nuclear Physics APublished version
https://doi.org/10.1016/j.nuclphysa.2004.09.115Other links
http://hdl.handle.net/2299/10373Metadata
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