6533b873fe1ef96bd12d5f6e

RESEARCH PRODUCT

Application of the relativistic mean-field mass model to ther-process and the influence of mass uncertainties

Yu. A. LitvinovBao-hua SunHans GeisselJie MengLi-sheng GengLi-sheng GengFernando Montes

subject

PhysicsNuclear physicsNuclear and High Energy PhysicsMean field theoryNucleosynthesisPairingNuclear structurer-processBCS theoryTable (information)Exponential function

description

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. The 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.

yearjournalcountryeditionlanguage
2008-08-21Physical Review C
https://doi.org/10.1103/physrevc.78.025806