Sensitivity Study of r-process Abundances to Nuclear Masses

2021/05/21 by Xiao-Fei Jiang, X. F. 晓飞 Jiang 姜, Xin-Hui Wu +3 · 36 citations
Physics and Astronomy · #Abundance (ecology) #Atomic mass #Gamma-ray bursts and supernovae #Mass number #Nuclear astrophysics #Nuclear physics research studies #Nuclear reaction #Nucleus #Particle physics theoretical and experimental studies #Range (aeronautics) #Sensitivity (control systems) #astro-ph.SR #nucl-th

paper · pdf · doi:10.3847/1538-4357/ac042f

published in The Astrophysical Journal 915(1), 29 (IOP Publishing) · 13 pages, 4 figures

arxiv created 2021/05/21 · openalex created_date 2021/06/07 · openalex publication_date 2021/07/01 · arxiv updated 2021/07/05 · openalex updated_date 2026/08/06

Abstract

Abstract The impact of nuclear mass uncertainties on the r -process abundances has been systematically studied with the classical r -process model by varying the mass of every individual nucleus in the range of ±0.1 to ±3.0 MeV based on six different mass models. A new quantitative relation between the uncertainties of r -process abundances and those of the nuclear masses is extracted, i.e., a mass uncertainty of ±0.5 MeV would lead to an abundance uncertainty of a factor around 2.5. It is found that this conclusion holds true for various mass models.

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