Isovector deformation and its link to the neutron shell closure

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dc.creatorKhoa, Dao T.
dc.date2006-12-19
dc.date.accessioned2026-07-07T11:23:57Z
dc.date.available2026-07-07T11:23:57Z
dc.descriptionDWBA analysis of the inelastic $^{30-40}$S$(p,p')$ and $^{18-22}$O$(p,p')$ scattering data measured in the inverse kinematics has been performed to determine the isoscalar ($δ_0$) and isovector ($δ_1$) deformation lengths of the 2$^+_1$ excitations in the Sulfur and Oxygen isotopes using a compact folding approach. A systematic $N$-dependence of $δ_0$ and $δ_1$ has been established which shows a link between $δ_1$ and the neutron-shell closure. Strong isovector deformations were found in several cases, e.g., the 2$^+_1$ state in $^{20}$O where $δ_1$ is nearly three times larger than $δ_0$. These results confirm the relation $δ_1>δ_0$ anticipated from the core polarization by the valence neutrons in the open-shell (neutron rich) nuclei. The effect of neutron shell closure at N=14 or 16 has been discussed based on the folding model analysis of the inelastic $^{22}$O+$p$ scattering data at 46.6 MeV/u measured recently at GANIL.
dc.descriptionTalk given at RNB7 conference (Cortina d'Ampezzo, Italy, July 3-7, 2006); 4 pages, 4 figures, to appear in Eur. Phys. Journal A
dc.identifierhttps://arxiv.org/abs/nucl-th/0612083
dc.identifierhttp://arxiv.org/abs/nucl-th/0612083
dc.identifierEur.Phys.J.ST150:31-34,2007
dc.identifierdoi:10.1140/epjst/e2007-00258-8
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/195067
dc.subjectNuclear Theory
dc.subjectNuclear Experiment
dc.titleIsovector deformation and its link to the neutron shell closure
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