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Fig. 1.

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Comparison of typical features of the r-process path with the latest measured nuclei from the AME2020 database. The abundance distribution corresponds to the early stages of r-process nucleosynthesis at t = 0.2 s, when the neutron capture process has begun. Our nucleosynthesis calculations started when the temperature dropped below T = 6 × 109 K. The astrophysical parameters are typical for binary neutron star mergers: The electron fraction Ye = 0.10, the specific entropy s = 10 kB/baryon, and the expansion timescale τ = 10 ms. The horizontal and vertical black lines indicate closed proton and neutron shell nuclei, respectively.

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