{
  "annotation_id": "3fdb03cd-553a-40c6-bf28-c436675ffcb9",
  "date_created": "2026-03-02T18:00:25.260000Z",
  "date_modified": "2026-03-02T18:00:25.260000Z",
  "file_hash": "00e9ac8403f590a49c5b502410efe9b2000da1f343d31c0372cb1899c2950991",
  "private": false,
  "record": {
    "abstract": "The excitation of the isovector giant dipole resonance (GDR) by alpha\nscattering is investigated as a method of probing the neutron excess in exotic\nnuclei. DWBA calculations are presented for 28O and 70Ca and the interplay of\nCoulomb and nuclear excitation is discussed. Since the magnitude of the Coulomb\nexcitation amplitude is strongly influenced by the Q-value, the neutron excess\nplays an important role, as it tends to lower the energy of the GDR. The\nexcitation of the compressional isoscalar dipole state in 70Ca by alpha\nscattering is also investigated. It is shown that the population of this latter\nstate may be an even more sensitive probe of the neutron skin than the\nisovector GDR.",
    "arxiv_id": "nucl-th/9811082",
    "authors": [
      "J. A. Christley",
      "E. G. Lanza",
      "S. M. Lenzi",
      "M. A. Nagarajan",
      "A. Vitturi"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1088/0954-3899/25/1/002",
    "journal_ref": "J.Phys.G25:11-16,1999",
    "title": "Excitation of the GDR and the Compressional Isoscalar Dipole State by   alpha scattering",
    "url": "https://arxiv.org/abs/nucl-th/9811082"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b3091103-85a7-42b5-97a9-f32de1b3205f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}