dorsal/arxiv
View SchemaCollective transition densities in neutron-rich nuclei
| Authors | F. Catara, E. G. Lanza, M. A. Nagarajan, A. Vitturi |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9610039 |
| URL | https://arxiv.org/abs/nucl-th/9610039 |
| DOI | 10.1016/S0375-9474(96)00457-5 |
| Journal | Nucl.Phys. A614 (1997) 86-94 |
Abstract
Quadrupole transition densities in neutron-rich nuclei in the vicinity of the neutron drip-line are calculated in the framework of the Random Phase Approximation. The continuum is treated by expansion in oscillator functions. We focus on the states which contribute to the usual Giant Quadrupole Resonance, and not on the low-lying strength which is also expected in such nuclei and whose collective character is still under debate. We find that, due to the large neutron skin in these nuclei, the isoscalar and isovector modes are in general strongly mixed. We further show that the transition densities corresponding to the GQR states can be reasonably well described by the collective model in terms of in phase and out of phase oscillations of neutron and proton densities which have different radii.
{
"annotation_id": "ad519701-8ebf-4699-9090-47a09d884642",
"date_created": "2026-03-02T18:00:18.948000Z",
"date_modified": "2026-03-02T18:00:18.948000Z",
"file_hash": "93a954e5552caf70e58f664d09c2c191fe12a74fc0a483817789004451851c76",
"private": false,
"record": {
"abstract": "Quadrupole transition densities in neutron-rich nuclei in the vicinity of the\nneutron drip-line are calculated in the framework of the Random Phase\nApproximation. The continuum is treated by expansion in oscillator functions.\nWe focus on the states which contribute to the usual Giant Quadrupole\nResonance, and not on the low-lying strength which is also expected in such\nnuclei and whose collective character is still under debate. We find that, due\nto the large neutron skin in these nuclei, the isoscalar and isovector modes\nare in general strongly mixed. We further show that the transition densities\ncorresponding to the GQR states can be reasonably well described by the\ncollective model in terms of in phase and out of phase oscillations of neutron\nand proton densities which have different radii.",
"arxiv_id": "nucl-th/9610039",
"authors": [
"F. Catara",
"E. G. Lanza",
"M. A. Nagarajan",
"A. Vitturi"
],
"categories": [
"nucl-th"
],
"doi": "10.1016/S0375-9474(96)00457-5",
"journal_ref": "Nucl.Phys. A614 (1997) 86-94",
"title": "Collective transition densities in neutron-rich nuclei",
"url": "https://arxiv.org/abs/nucl-th/9610039"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "035af596-7034-4ec1-878d-e5fcef9a9d69",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}