{
  "id": "1612.05868",
  "version": "v1",
  "published": "2016-12-18T08:20:55.000Z",
  "updated": "2016-12-18T08:20:55.000Z",
  "title": "Decay mechanism and lifetime of $^{67}$Kr",
  "authors": [
    "L. V. Grigorenko",
    "T. A. Golubkova",
    "J. S. Vaagen",
    "M. V. Zhukov"
  ],
  "comment": "7 pages, 8 figures",
  "categories": [
    "nucl-th"
  ],
  "abstract": "The lifetime of the recently discovered $2p$ emitter $^{67}$Kr was recently found considerably below the lower limit predicted theoretically. This communication addresses this issue.Different separation energy systematics are analyzed and different mechanisms for $2p$ emission are evaluated. It is found that the most plausible reason for this disagreement is a decay mechanism of $^{67}$Kr, which is not \"true $2p$\" emission, but \"transition dynamics\" on the borderline between true $2p$ and sequential $2p$ decay mechanisms. If this is true, this imposes stringent limits $E_r=1.35-1.42$ MeV on the ground state energy of $^{66}$Br relative to the $^{65}$Se-$p$ threshold.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2016-12-18T08:20:55.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "decay mechanism",
      "separation energy systematics",
      "imposes stringent limits",
      "ground state energy",
      "lower limit"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}