Improved Empirical Hamiltonians for Neutron-rich Nuclei in 132Sn region

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dc.creatorSarkar, Sukhendusekhar
dc.creatorSarkar, M. Saha
dc.date2003-02-22
dc.date2004-01-21
dc.date.accessioned2026-07-07T05:39:30Z
dc.date.available2026-07-07T05:39:30Z
dc.descriptionUsing recent experimental information for 132Sn region, an empirical Hamiltonian is obtained by some modifications of a Hamiltonian (CW5082) originally derived from the 208Pb region. Shell model calculations with the new Hamiltonian shows remarkable improvement in the predictive power when compared with the available experimental results. It overcomes many limitations of the CW5082 Hamiltonian in this region, specially for N>=84 isotones. The calculated level spectra and B(E2) values with the new Hamiltonian, also compare well with the available results calculated with the CD-Bonn and SKX Hamiltonians, reflecting consistency in the wave function structure at least in the low-lying regions. Interesting behaviour of effective charges is revealed in this region. It is shown that a drastic reduction of proton effective charge is necessary for obtaining B(E2) values for the N=84 isotones. Neutron effective charge is found to be in the range (0.62 - 0.72)e. We predict the spectroscopic properties of 135,136Sn not yet known experimentally. Further improvement of the modified Hamiltonian is also initiated.
dc.description4 pages, 4 figures, Accepted for publication in European Journal of Physics A
dc.identifierhttps://arxiv.org/abs/nucl-th/0302064
dc.identifierhttp://arxiv.org/abs/nucl-th/0302064
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/81985
dc.subjectNuclear Theory
dc.titleImproved Empirical Hamiltonians for Neutron-rich Nuclei in 132Sn region
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