dorsal/arxiv
View SchemaUnbound exotic nuclei studied by transfer to the continuum reactions
| Authors | G. Blanchon, A. Bonaccorso, N. Vinh Mau |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0402050 |
| URL | https://arxiv.org/abs/nucl-th/0402050 |
| DOI | 10.1016/j.nuclphysa.2004.04.106 |
| Journal | Nucl.Phys. A739 (2004) 259-273 |
Abstract
In this paper we show that the theory of transfer reactions from bound to continuum states is well suited to extract structure information from data obtained by performing "spectroscopy in the continuum". The low energy unbound states of nuclei such as $^{10}$Li and $^{5}$He can be analyzed and the neutron-core interaction, necessary to describe the corresponding borromean nuclei $^{11}$Li and $^{6}$He can be determined in a semi-phenomenological way. An application to the study of $^{10}$Li is then discussed and it is shown that the scattering length for s-states at threshold can be obtained from the ratio of experimental and theoretical cross sections. The scattering single particle states of the system n+$^{9}$Li are obtained in a potential model. The corresponding S-matrix is used to calculate the transfer cross section as a function of the neutron continuum energy with respect to $^{9}$Li. Three different reactions are calculated $^{9}Li(d,p)^{10}Li$, $^{9}Li(^{9}Be,^{8}Be)^{10}Li$, $^{9}Li(^{13}C,^{12}C)^{10}Li$, to check the sensitivity of the results to the target used and in particular to the transfer matching conditions. Thus the sensitivity of the structure information extracted from experimental data on the reaction mechanism is assessed.
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"abstract": "In this paper we show that the theory of transfer reactions from bound to\ncontinuum states is well suited to extract structure information from data\nobtained by performing \"spectroscopy in the continuum\". The low energy unbound\nstates of nuclei such as $^{10}$Li and $^{5}$He can be analyzed and the\nneutron-core interaction, necessary to describe the corresponding borromean\nnuclei $^{11}$Li and $^{6}$He can be determined in a semi-phenomenological way.\nAn application to the study of $^{10}$Li is then discussed and it is shown that\nthe scattering length for s-states at threshold can be obtained from the ratio\nof experimental and theoretical cross sections. The scattering single particle\nstates of the system n+$^{9}$Li are obtained in a potential model. The\ncorresponding S-matrix is used to calculate the transfer cross section as a\nfunction of the neutron continuum energy with respect to $^{9}$Li. Three\ndifferent reactions are calculated $^{9}Li(d,p)^{10}Li$,\n$^{9}Li(^{9}Be,^{8}Be)^{10}Li$, $^{9}Li(^{13}C,^{12}C)^{10}Li$, to check the\nsensitivity of the results to the target used and in particular to the transfer\nmatching conditions. Thus the sensitivity of the structure information\nextracted from experimental data on the reaction mechanism is assessed.",
"arxiv_id": "nucl-th/0402050",
"authors": [
"G. Blanchon",
"A. Bonaccorso",
"N. Vinh Mau"
],
"categories": [
"nucl-th",
"nucl-ex"
],
"doi": "10.1016/j.nuclphysa.2004.04.106",
"journal_ref": "Nucl.Phys. A739 (2004) 259-273",
"title": "Unbound exotic nuclei studied by transfer to the continuum reactions",
"url": "https://arxiv.org/abs/nucl-th/0402050"
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