{
  "id": "1609.01407",
  "version": "v1",
  "published": "2016-09-06T06:24:25.000Z",
  "updated": "2016-09-06T06:24:25.000Z",
  "title": "3$α$-cluster structure and monopole transition in $^{12}$C and $^{14}$C",
  "authors": [
    "Yuta Yoshida",
    "Yoshiko Kanada-En'yo"
  ],
  "categories": [
    "nucl-th"
  ],
  "abstract": "3$\\alpha$-cluster structures and monopole transitions of $0^+$ states in $^{12}$C and $^{14}$C were investigated with $3\\alpha$- and $^{10}$Be+$\\alpha$-cluster models. A gas-like $3\\alpha$ state and a bending-chain $3\\alpha$ state were obtained in the $0^+_2$ and $0^+_3$ states of $^{12}$C, respectively. In $^{14}$C, a linear-chain 3$\\alpha$ structure is found in the $0^+_4$ state near the $^{10}$Be+$\\alpha$ threshold, but a cluster gas-like state does not appear because valence neutrons attract $\\alpha$ clusters and suppress spatial development of 3$\\alpha$ clustering. It was found that the linear-chain state in $^{14}$C is stabilized against the bending and $\\alpha$ escaping modes by valence neutrons. The monopole transition strengths in $^{12}$C are enhanced by $3\\alpha$-cluster developing, whereas, those in $^{14}$C are not enhanced so much because of the tight binding of $\\alpha$ clusters by valence neutrons.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2016-09-06T06:24:25.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "cluster structure",
      "valence neutrons attract",
      "monopole transition strengths",
      "suppress spatial development",
      "cluster gas-like state"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}