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Influence of nuclear mass uncertainties on radiative neutron-capture rates

Physical Review C, ISSN: 2469-9993, Vol: 100, Issue: 2
2019
  • 13
    Citations
  • 0
    Usage
  • 5
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    13
    • Citation Indexes
      13
  • Captures
    5

Article Description

Neutron-capture rate plays a crucial role in the rapid neutron-capture process (r-process) and nuclear mass is one of the most important inputs for the estimations of neutron-capture rates. In this work, we employ ten nuclear mass models, including macroscopic, macroscopic-microscopic, and microscopic models, to calculate the radiative neutron-capture rates for the nuclei relevant to the r-process at various temperatures T=105-1010K. It is found that the differences in the predictions of neutron-capture rate using these mass models get larger when moving to the neutron-rich and superheavy regions, whereas they generally become smaller with the increase of temperature. Taking the nuclei on the N=126 r-process path as examples, we find that the uncertainties of neutron-capture rates at T=109K range from about one to four orders of magnitude. The influence of the experimental mass errors on neutron-capture rates is investigated as well.

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