Neutron-induced astrophysical reaction rates for translead nuclei

TL;DR

This paper calculates neutron-induced reaction rates, including fission, for translead nuclei across a wide temperature range using various nuclear models, providing data and analyzing uncertainties in the inputs.

Contribution

It offers comprehensive reaction rate calculations for translead nuclei using multiple nuclear models and discusses the sensitivity and uncertainties of these rates.

Findings

Reaction rates are provided for Z=83 to 119 nuclei.

Comparison of different nuclear models highlights input sensitivities.

Tables and fits are supplied for use in astrophysical simulations.

Abstract

Neutron-induced reaction rates, including fission, are calculated in the temperature range 1.d8 <T (K) < 1.d10 within the framework of the statistical model for targets with atomic number 83 < Z < 119 (from Po to Uuo) from the neutron to the proton drip-line. Four sets of rates have been calculated, utilizing - where possible - consistent nuclear data for neutron separation energies and fission barriers from Thomas-Fermi (TF), Extended Thomas-Fermi plus Strutinsky Integral (ETFSI), Finite-Range Droplet Model (FRDM) and Hartree-Fock-Bogolyubov (HFB) predictions. Tables of calculated values as well as analytic seven parameter fits in the standard REACLIB format are supplied. We also discuss the sensitivity of the rates to the input, aiming at a better understanding of the uncertainties introduced by the nuclear input.