{
  "id": "1103.4189",
  "version": "v1",
  "published": "2011-03-22T02:21:04.000Z",
  "updated": "2011-03-22T02:21:04.000Z",
  "title": "Coulomb dissociation of the deformed halo nucleus 31Ne",
  "authors": [
    "Y. Urata",
    "K. Hagino",
    "H. Sagawa"
  ],
  "comment": "6 pages, 3 figures, 1 table",
  "categories": [
    "nucl-th",
    "nucl-ex"
  ],
  "abstract": "The recently observed large cross sections for the Coulomb dissociation of $^{31}$Ne nucleus indicate that this nucleus takes a halo structure in the ground state. We analyse these experimental data using the particle-rotor model, that takes into account the rotational excitation of the core nucleus $^{30}$Ne. We show that the experimental data can be well reproduced when the quadrupole deformation parameter of $^{30}$Ne is around $\\beta_2=0.2\\sim0.3$, at which the ground state takes the spin and parity of $I^\\pi$=3/2$^-$. This state corresponds to the Nilsson level [330 1/2] in the adiabatic limit of the particle-rotor model. On the other hand, the state corresponding to the Nilsson level [321 3/2] with $\\beta_2\\sim 0.55$ can be excluded when the finite excitation energy of the core is taken into account, even though this configuration is a candidate for the ground state of $^{31}$Ne in the Nilsson model analysis. We discuss briefly also a possibility of the $I^\\pi$=1/2$^+$ configuration with $\\beta_2\\sim 1$ and $\\beta_2\\sim -0.4$.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2011-03-22T02:21:04.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "25.60.Gc",
      "27.30.+t",
      "21.60.-n",
      "21.10.Gv"
    ],
    "keywords": [
      "deformed halo nucleus 31ne",
      "coulomb dissociation",
      "ground state",
      "nilsson level",
      "particle-rotor model"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 893546,
      "adsabs": "2011arXiv1103.4189U"
    }
  }
}