Collective quadrupole excitations in the 50 < Z, N < 82 nuclei with the general Bohr Hamiltonian
نویسندگان
چکیده
منابع مشابه
- th / 9 80 50 44 v 1 2 3 M ay 1 99 8 Collective Quadrupole Excitations in the 50 < Z , N < 82 Nuclei with the Generalized Bohr Hamiltonian
The generalized Bohr Hamiltonian is applied to a description of low-lying collective excitations in even-even isotopes of Te, Xe, Ba, Ce, Nd and Sm. The collective potential and inertial functions are determined by means of the Strutinsky method and the cranking model, respectively. A shell-dependent parametrization of the Nilsson potential is used. An approximate particle-number projection is ...
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The generalized Bohr Hamiltonian was used to describe the low-lying collective excitations in even-even isotopes of Ru, Pd, Te, Ba and Nd. The Strutinsky collective potential and cranking inertial functions were obtained using the Nilsson potential. The effect of coupling with the pairing vibrations is taken into account approximately when determining the inertial functions. The calculation doe...
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Abstract. Low-energy dipole excitations have been investigated theoretically in N=50 Sr and Zr, several N=82 isotones and the Z = 50 Sn isotopes. For this purpose a method incorporating both HFB and multi-phonon QPM theory is applied. A concentration of one-phonon dipole strength located below the neutron emission threshold has been calculated in these nuclei. The analysis of the corresponding ...
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Exact numerical diagonalization of the Bohr Hamiltonian by SU(1, 1) × SO(5) methods is used to obtain detailed quantitative predictions for single-phonon and multi-phonon excitations in well-deformed rotor nuclei. Dynamical γ deformation is found to significantly influence the predictions through its coupling to the rotational motion. Basic signatures for the onset of rigid triaxial deformation...
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The BRST treatment of triaxial systems rotating at high spins is used to solve perturbatively the γ-independent Bohr collective hamiltonian.
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ژورنال
عنوان ژورنال: Nuclear Physics A
سال: 1999
ISSN: 0375-9474
DOI: 10.1016/s0375-9474(99)00023-8