{
  "id": "2106.02279",
  "version": "v1",
  "published": "2021-06-04T06:23:20.000Z",
  "updated": "2021-06-04T06:23:20.000Z",
  "title": "Charge radii of potassium isotopes in the RMF(BCS)* approach",
  "authors": [
    "Rong An",
    "Shi-sheng Zhang",
    "Li-sheng Geng",
    "Feng-shou Zhang"
  ],
  "comment": "10 pages, 5 figures",
  "categories": [
    "nucl-th"
  ],
  "abstract": "We apply the recently proposed RMF(BCS)* ansatz to study the charge radii of the potassium isotopic chain up to $^{52}$K. It is shown that the experimental data can be reproduced rather well, qualitatively similar to the Fayans nuclear density functional theory, but with a slightly better description of the odd-even staggerings (OES). Nonetheless, both methods fail for $^{50}$K and to a lesser extent for $^{48,52}$K. It is shown that if these nuclei are deformed with a $\\beta_{20}\\approx-0.2$, then one can obtain results consistent with experiments for both charge radii and spin-parities. We argue that beyond mean field studies are needed to properly describe the charge radii of these three nuclei, particularly for $^{50}$K.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2021-06-04T06:23:20.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "charge radii",
      "potassium isotopes",
      "fayans nuclear density functional theory",
      "mean field studies",
      "potassium isotopic chain"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}