{
  "id": "2007.06684",
  "version": "v1",
  "published": "2020-07-13T20:52:49.000Z",
  "updated": "2020-07-13T20:52:49.000Z",
  "title": "Charge radii of exotic neon and magnesium isotopes",
  "authors": [
    "S. J. Novario",
    "G. Hagen",
    "G. R. Jansen",
    "T. Papenbrock"
  ],
  "comment": "9 pages, 8 figures",
  "categories": [
    "nucl-th"
  ],
  "abstract": "We compute the charge radii of even-mass neon and magnesium isotopes from neutron number N = 8 to the dripline. Our calculations are based on nucleon-nucleon and three-nucleon potentials from chiral effective field theory that include delta isobars. These potentials yield an accurate saturation point and symmetry energy of nuclear matter. We use the coupled-cluster method and start from an axially symmetric reference state. Binding energies and two-neutron separation energies largely agree with data and the dripline in neon is accurate. The computed charge radii have an estimated uncertainty of about 2-3% and are accurate for many isotopes where data exist. Finer details such as isotope shifts, however, are not accurately reproduced. Chiral potentials correctly yield the subshell closure at N = 14 and also a decrease in charge radii at N = 8 (observed in neon and predicted for magnesium). They yield a continued increase of charge radii as neutrons are added beyond N = 14 yet underestimate the large increase at N = 20 in magnesium.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2020-07-13T20:52:49.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "charge radii",
      "magnesium isotopes",
      "exotic neon",
      "two-neutron separation energies largely agree",
      "accurate saturation point"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 9,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}