Quasi- truncation scheme for even–even sd-shell nuclei
نویسندگان
چکیده
منابع مشابه
Quasi - SU ( 3 ) truncation scheme for odd - even sd - shell nuclei .
Abstract The quasi-SU(3) symmetry, as found in shell modelThe quasi-SU(3) symmetry, as found in shell model calculations [1], refers to the dominance of the single particle plus quadrupole quadrupole terms in the Hamiltonian used to describe well deformed nuclei, and to the subspace relevant in its diagonalization. It provides a very efficient basis truncation scheme. It is shown that a small n...
متن کاملQuasi-SU(3) truncation scheme for even-even sd-shell nuclei
Abstract The quasi-SU(3) symmetry was uncovered in full pf and sdg shell-model calculations for both even-even [1] and odd-even nuclei [2]. It manifests itself through a dominance of single-particle and quadrupole-quadrupole terms in a Hamiltonian used to describe welldeformed nuclei. A practical consequence of the quasi-SU(3) symmetry is an efficient basis truncation scheme. In [3] it is shown...
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Shell-model calculations are presented for electric quadrupole moments of A =17—39 nuclei. The shell-model wave functions, which span the complete Ods/2-1sl/2 Dd3/2 model space in all instances, are obtained by diagonalizing an sd-shell Hamiltonian which consists of a fixed singleparticle energy spectrum and a single set of two-body matrix elements scaled as a function of the mass number A. Res...
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Trial wave functions including angular momentum projection and deformation with central Jastrow and linear-type correlations are calculated to study the ground state rotational band of the Ne, Mg, Si, S, and Ar nuclei and the ground state of Ca. A systematic analysis of the competition among different correlation mechanisms on the binding energy and other properties such as the root mean square...
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We derive new Hamiltonians for the sd shell, USDA and USDB, based on a renormalized G matrix with linear combinations of two-body matrix elements adjusted to fit a complete set of data for experimental binding energies and excitation energies for the sd-shell nuclei. These Hamiltonians provide a new level of precision for realistic sd-shell wave functions for applications to nuclear structure a...
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ژورنال
عنوان ژورنال: Nuclear Physics A
سال: 2001
ISSN: 0375-9474
DOI: 10.1016/s0375-9474(00)00708-9