Nuclear properties far from stability and the R-process

1 January 1995

proceedings article
Published by AIP Publishing in AIP Conference Proceedings

Vol. 327 (1) , 113-124
https://doi.org/10.1063/1.47426

Abstract

Within the ‘waiting‐point’ assumption, we have investigated the influence of nuclear properties far from stability on the prediction of solar‐system r‐process abundance (N r,⊙) distributions. When using data sets for masses and β‐decay quantities from the Finite‐Range Droplet Model (FRDM) and the Extended Thomas‐Fermi plus Strutinski Integral (ETFSI) method, local deficiencies in the N r,⊙ fits around A≊115 and 175 cannot be avoided. As pointed out in previous papers, they are due to model‐inherent weaknesses in the shell‐structure description very far from stability. New experiments at CERN/ISOLDE together with recent HFB calculations using the Skyrime P interaction, confirm our earlier qualitative predictions, in particular shell‐quenching and neutron‐skin effects in drip‐line nuclei. These new nuclear‐structure properties are shown to result in a considerable improvement of the global N r,⊙ fits.

Keywords

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