{
  "id": "1101.4046",
  "version": "v2",
  "published": "2011-01-20T22:48:36.000Z",
  "updated": "2011-07-18T19:52:32.000Z",
  "title": "Spin-aligned neutron-proton pair mode in atomic nuclei",
  "authors": [
    "Chong Qi",
    "J. Blomqvist",
    "T. Bäck",
    "B. Cederwall",
    "A. Johnson",
    "R. J. Liotta",
    "R. Wyss"
  ],
  "comment": "11 pages, 5 figures, version to appear in Phys. Rev. C (Rapid communication)",
  "journal": "Phys.Rev.C84:021301,2011",
  "doi": "10.1103/PhysRevC.84.021301",
  "categories": [
    "nucl-th",
    "nucl-ex"
  ],
  "abstract": "Shell model calculations using realistic interactions reveal that the ground and low-lying yrast states of the $N=Z$ nucleus $^{92}_{46}$Pd are mainly built upon isoscalar neutron-proton pairs each carrying the maximum angular momentum J=9 allowed by the shell $0g_{9/2}$ which is dominant in this nuclear region. This structure is different from the ones found in the ground and low-lying yrast states of all other even-even nuclei studied so far. The low-lying spectrum of excited states generated by such correlated neutron-proton pairs has two distinctive features: i) the levels are almost equidistant at low energies and ii) the transition probability $I\\rightarrow I-2$ is approximately constant and strongly selective. This unique mode is shown to replace normal isovector pairing as the dominating coupling scheme in $N=Z$ nuclei approaching the doubly-magic nucleus $^{100}$Sn.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2011-07-18T19:52:32.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "21.60.Cs",
      "21.10.Re",
      "23.20.-g",
      "21.30.Fe"
    ],
    "keywords": [
      "spin-aligned neutron-proton pair mode",
      "atomic nuclei",
      "low-lying yrast states",
      "realistic interactions reveal",
      "shell model calculations"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review C",
      "year": 2011,
      "month": "Aug",
      "volume": 84,
      "number": 2,
      "pages": "021301"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 11,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 885128,
      "adsabs": "2011PhRvC..84b1301Q"
    }
  }
}