dorsal/arxiv
View SchemaThe Spectral Line Shape of Exotic Nuclei
| Authors | F. Ghielmetti, G. Colò, E. Vigezzi, P. F. Bortignon, R. A. Broglia |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9609010 |
| URL | https://arxiv.org/abs/nucl-th/9609010 |
| DOI | 10.1103/PhysRevC.54.R2143 |
| Journal | Phys.Rev.C54:2143-2145,1996 |
Abstract
The quadrupole strength function of $^{28}O$ is calculated making use of the SIII interaction, within the framework of continuum-RPA and taking into account collisions among the nucleons (doorway coupling). The centroid of the giant resonance is predicted at $\approx 14$ MeV, that is much below the energy expected for both isoscalar and isovector quadrupole resonances in nuclei along the stability valley. About half of this width arises from the coupling of the resonance to the continuum and about half is due to doorway coupling. This result is similar to that obtained in the study of giant resonances in light, $\beta$-stable nuclei, and shows the lack of basis for the expectation, entertained until now in the literature, that continuum decay was the main damping mechanism of giant resonances in halo nuclei.
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"abstract": "The quadrupole strength function of $^{28}O$ is calculated making use of the\nSIII interaction, within the framework of continuum-RPA and taking into account\ncollisions among the nucleons (doorway coupling). The centroid of the giant\nresonance is predicted at $\\approx 14$ MeV, that is much below the energy\nexpected for both isoscalar and isovector quadrupole resonances in nuclei along\nthe stability valley. About half of this width arises from the coupling of the\nresonance to the continuum and about half is due to doorway coupling. This\nresult is similar to that obtained in the study of giant resonances in light,\n$\\beta$-stable nuclei, and shows the lack of basis for the expectation,\nentertained until now in the literature, that continuum decay was the main\ndamping mechanism of giant resonances in halo nuclei.",
"arxiv_id": "nucl-th/9609010",
"authors": [
"F. Ghielmetti",
"G. Col\u00f2",
"E. Vigezzi",
"P. F. Bortignon",
"R. A. Broglia"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.54.R2143",
"journal_ref": "Phys.Rev.C54:2143-2145,1996",
"title": "The Spectral Line Shape of Exotic Nuclei",
"url": "https://arxiv.org/abs/nucl-th/9609010"
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