dorsal/arxiv
View SchemaCore Excited Fano-Resonances in Exotic Nuclei
| Authors | S. E. A. Orrigo, H. Lenske, F. Cappuzzello, A. Cunsolo, A. Foti, A. Lazzaro, C. Nociforo, J. S. Winfield, . |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0603019 |
| URL | https://arxiv.org/abs/nucl-th/0603019 |
| DOI | 10.1016/j.physletb.2005.12.046 |
| Journal | Phys.Lett. B633 (2006) 469-473 |
Abstract
Fano-resonances are investigated as a new continuum excitation mode in exotic nuclei. By theoretical model calculations we show that the coupling of a single particle elastic channel to closed core-excited channels leads to sharp resonances in the low-energy continuum. A signature for such bound states embedded in the continuum (BSEC) are characteristic interference effects leading to asymmetric line shapes. Following the quasiparticle-core coupling model we consider the coupling of 1-QP (one-quasiparticle) and 3-QP components and find a number of long-living resonance structures close to the particle threshold. Results for 15C are compared with experimental data, showing that the experimentally observed spectral distribution and the interference pattern are in qualitative agreement with a BSEC interpretation.
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"abstract": "Fano-resonances are investigated as a new continuum excitation mode in exotic\nnuclei. By theoretical model calculations we show that the coupling of a single\nparticle elastic channel to closed core-excited channels leads to sharp\nresonances in the low-energy continuum. A signature for such bound states\nembedded in the continuum (BSEC) are characteristic interference effects\nleading to asymmetric line shapes. Following the quasiparticle-core coupling\nmodel we consider the coupling of 1-QP (one-quasiparticle) and 3-QP components\nand find a number of long-living resonance structures close to the particle\nthreshold. Results for 15C are compared with experimental data, showing that\nthe experimentally observed spectral distribution and the interference pattern\nare in qualitative agreement with a BSEC interpretation.",
"arxiv_id": "nucl-th/0603019",
"authors": [
"S. E. A. Orrigo",
"H. Lenske",
"F. Cappuzzello",
"A. Cunsolo",
"A. Foti",
"A. Lazzaro",
"C. Nociforo",
"J. S. Winfield",
"."
],
"categories": [
"nucl-th",
"nucl-ex"
],
"doi": "10.1016/j.physletb.2005.12.046",
"journal_ref": "Phys.Lett. B633 (2006) 469-473",
"title": "Core Excited Fano-Resonances in Exotic Nuclei",
"url": "https://arxiv.org/abs/nucl-th/0603019"
},
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