## 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

Original language | English |
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Pages (from-to) | 633-654 |

Number of pages | 22 |

Journal | Nuclear Physics A |

Volume | 747 |

Issue number | 2-4 |

DOIs | |

Publication status | Published - 24 Jan 2005 |

## Keywords

- STRENGTH FUNCTIONS
- CHRONOMETERS
- fission rates
- NEUTRON-STAR MERGERS
- TERNARY FISSION
- APPROXIMATION
- r-process
- MODEL
- BETA-DELAYED FISSION
- STABILITY
- NUCLEAR-MASS FORMULA
- fission
- EMISSION