dorsal/arxiv
View SchemaDipole resonances in light neutron-rich nuclei studied with time-dependent calculations of antisymmetrized molecular dynamics
| Authors | Y. Kanada-En'yo, M. Kimura |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0508057 |
| URL | https://arxiv.org/abs/nucl-th/0508057 |
| DOI | 10.1103/PhysRevC.72.064301 |
| Journal | Phys.Rev. C72 (2005) 064301 |
Abstract
In order to study isovector dipole response of neutron-rich nuclei, we have applied a time-dependent method of antisymmetrized molecular dynamics. The dipole resonances in Be, B and C isotopes have been investigated. In $^{10}$Be, $^{15}$B, $^{16}$C, collective modes of the vibration between a core and valence neutrons cause soft resonances at the excitation energy $E_x=10-15$ MeV below the giant dipole resonance(GDR). In $^{16}$C, we found that a remarkable peak at $E_x=14$ MeV corresponds to coherent motion of four valence neutrons against a $^{12}$C core, while the GDR arises from the core vibration in the $E_x >20$ MeV region. In $^{17}$B and $^{18}$C, the dipole strengths in the low energy region decline compared with those in $^{15}$B and $^{16}$C. We also discuss the energy weighted sum rule for the $E1$ transitions.
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"abstract": "In order to study isovector dipole response of neutron-rich nuclei, we have\napplied a time-dependent method of antisymmetrized molecular dynamics. The\ndipole resonances in Be, B and C isotopes have been investigated. In $^{10}$Be,\n$^{15}$B, $^{16}$C, collective modes of the vibration between a core and\nvalence neutrons cause soft resonances at the excitation energy $E_x=10-15$ MeV\nbelow the giant dipole resonance(GDR). In $^{16}$C, we found that a remarkable\npeak at $E_x=14$ MeV corresponds to coherent motion of four valence neutrons\nagainst a $^{12}$C core, while the GDR arises from the core vibration in the\n$E_x \u003e20$ MeV region. In $^{17}$B and $^{18}$C, the dipole strengths in the low\nenergy region decline compared with those in $^{15}$B and $^{16}$C. We also\ndiscuss the energy weighted sum rule for the $E1$ transitions.",
"arxiv_id": "nucl-th/0508057",
"authors": [
"Y. Kanada-En\u0027yo",
"M. Kimura"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.72.064301",
"journal_ref": "Phys.Rev. C72 (2005) 064301",
"title": "Dipole resonances in light neutron-rich nuclei studied with time-dependent calculations of antisymmetrized molecular dynamics",
"url": "https://arxiv.org/abs/nucl-th/0508057"
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