{
  "id": "nucl-th/0401021",
  "version": "v1",
  "published": "2004-01-12T11:27:22.000Z",
  "updated": "2004-01-12T11:27:22.000Z",
  "title": "The island of deformation and shape co-existence in neutron-deficient nuclei of the Pb region using relativistic mean field model",
  "authors": [
    "M. S. Mehta",
    "T. K. Jha",
    "S. K. Patra",
    "Raj K. Gupta"
  ],
  "comment": "Submitted for publication",
  "categories": [
    "nucl-th"
  ],
  "abstract": "We have investigated the ground-state structures of even-even neutron-deficient isotopes of Hg and Pb nuclei within the framework of a deformed relativistic mean field formalism for a number of commonly used parameter sets, namely NL1, NL3, NL-SH, NL-RA1 and TM1. The ground states of a bunch of Hg and Pb-isotopes towards the proton-dripline are found to be deformed for all the forces, with a constant pairing gap. The small differences in the ground- and the first-excited state binding energies predict a sea of low-lying excited states, and hence of shape co-existence, for both the Hg and Pb nuclei. In general, a discrepancy between the experimentally observed and theoretically predicted (sign of) quadrupole deformations is noticed in this mass region. The constrained potential energy surfaces and the single-particle energy spectra analyzed for some selected nuclei show that the known large shell gap for Pb nuclei at Z=82 is almost extinguished for its proton-rich isotopes.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2004-01-12T11:27:22.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "relativistic mean field model",
      "shape co-existence",
      "neutron-deficient nuclei",
      "pb region",
      "relativistic mean field formalism"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 642586,
      "adsabs": "2004nucl.th...1021M"
    }
  }
}