{
  "id": "2003.06370",
  "version": "v1",
  "published": "2020-03-13T16:30:15.000Z",
  "updated": "2020-03-13T16:30:15.000Z",
  "title": "Spallation of r-Process Nuclei Ejected from a Neutron Star Merger",
  "authors": [
    "Xilu Wang",
    "Brian D. Fields",
    "Matthew Mumpower",
    "Trevor Sprouse",
    "Rebecca Surman",
    "Nicole Vassh"
  ],
  "comment": "11 pages, 3 figures, NPA-IX proceedings",
  "categories": [
    "astro-ph.HE",
    "nucl-th"
  ],
  "abstract": "Neutron star mergers (NSMs) are rapid neutron capture (r-process) nucleosynthesis sites, which eject materials at high velocities, from 0.1c to as high as 0.6c. Thus the r-process nuclei ejected from a NSM event are sufficiently energetic to initiate spallation reactions with the interstellar medium (ISM) particles. With a thick-target model for the propagation of high-speed heavy nuclei in the ISM, we find that spallation reactions may shift the r-process abundance patterns towards solar data, particularly around the low-mass edges of the r-process peaks where neighboring nuclei have very different abundances. The spallation effects depend both on the astrophysical conditions of the r-process nuclei and nuclear physics inputs for the nucleosynthesis calculations and the propagation process. This work extends that of [Wang et al.(2019)] by focusing on the influence of nuclear physics variations on spallation effects.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2020-03-13T16:30:15.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "neutron star merger",
      "r-process nuclei",
      "spallation effects",
      "r-process abundance patterns",
      "nuclear physics variations"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 11,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}