Application of the RMF mass model to the r-process and the influence of mass uncertainties

Details Application of the RMF mass model to the r-process and the influence of mass uncertainties Application of the RMF mass model to the r-process and the influence of mass uncertainties

2007-10-11

arxiv.org/abs/0710.2332v2

Astronomy and Astrophysics

Astrophysics

to be published in Phys. Rev. C, 22 pages, 9 figures

Scientific paper

10.1103/PhysRevC.78.025806

A new mass table calculated by the relativistic mean field approach with the state-dependent BCS method for the pairing correlation is applied for the first time to study r-process nucleosynthesis. The solar r-process abundance is well reproduced within a waiting-point approximation approach. Using an exponential fitting procedure to find the required astrophysical conditions, the influence of mass uncertainty is investigated. R-process calculations using the FRDM, ETFSI-Q and HFB-13 mass tables have been used for that purpose. It is found that the nuclear physical uncertainty can significantly influence the deduced astrophysical conditions for the r-process site. In addition, the influence of the shell closure and shape transition have been examined in detail in the r-process simulations.

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