{
  "abstract": "The microscopic approach of the triaxial projected shell model (TPSM) is employed to investigate the properties of the $8^-$ isomer in the six isotones of $^{128}$Xe, $^{130}$Ba, $^{132}$Ce, $^{134}$Nd, $^{136}$Sm, and $^{138}$Gd. The observed decay pattern of the isomer for these isotones is unexpected with the hindrance factor decreasing with atomic number. It is shown in the present work that multi-quasiparticle mixing into the ground-state configuration is responsible for the observed decreasing trend of the hindrance factor. We have also calculated the excitation energies and in-band $B(E2)$ transition probabilities of the yrast and the band built on the $8^-$ isomer for the six isotones, and it is shown that TPSM approach reproduces the measured quantities quite satisfactorily.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.23622",
  "author_total": 8,
  "authors": [
    {
      "name": "S. A. Bhat"
    },
    {
      "name": "Nazira Nazir"
    },
    {
      "name": "W. Tawseef"
    },
    {
      "name": "J. A. Sheikh"
    },
    {
      "name": "G. H. Bhat"
    },
    {
      "name": "S. Jehangir"
    },
    {
      "name": "G. B. Vakil"
    },
    {
      "name": "M. Bhuyan"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1as3k3920vfck.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.23622",
  "fulltext_url": null,
  "id": "1as3k3920vfck",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.23622",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "nucl-th"
    ],
    [
      "openalex",
      "3106|Nuclear physics research studies"
    ]
  ],
  "openalex": "W7214005706",
  "pdf_url": "https://arxiv.org/pdf/2609.23622",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-20",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/1as3k3920vfck.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:19Z",
      "native_id": "2609.23622",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.23622"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:nucl-th",
      "subfield": "nuclear"
    }
  ],
  "title": "Microscopic investigation of the $I^π=8^-$ isomer decay in even-even N = 74 isotones",
  "title_text": "Microscopic investigation of the I^π=8^- isomer decay in even-even N = 74 isotones",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:19Z",
  "url": "https://research.draconitic.com/paper/1as3k3920vfck",
  "venue": "arXiv",
  "versions": []
}