Open AccessMixed symmetry states for 70Zn, 72Ge, 74Se, 76Kr isotones by using IBM-2
Author(s) -
Mohammed Abdul Kadhim Hadi Al–Sadi,
Qasim Shakir Kadhim,
Salwan Hassan Abdul Zahrah Yasi
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1234/1/012034
Subject(s) - materials science , algorithm , physics , computer science
In present study we have calculated some nuclear properties for 70 Zn, 72 Ge, 74 Se, 76Kr isotones, by using interacting boson proton and neutron model and calculated some properties for these isotones, firstly: excited energy levels by guessing a small number of parameters in Hamiltonian operators, secondly: display the energy levels ( 2 5 + , 3 1 + , 5 1 + , 1 1 + ) that have Mixed symmetry of state (MSS) property which gets a quick response when changing majorana term ζ2, as a result of mixing between the wave function of protons and wave function of neutrons. Thirdly: it has been calculated energy ratios 4 1 + / 2 1 + and 6 1 + / 2 1 + it was found that these isotones have a varied dynamic symmetries. Starting from the symmetry U(5) of the 70 Zn nuclei then passing through the transition region between (U5-O6) for 72 Ge, 74 Se nuclei and finally approaching to the O(6) symmetry for 76 Kr nuclei. As well as have been calculated the probability for electric quadruple transition B(E2), magnetic dipole B(M1) and mixing ratios δ(E2/M1), which All express a good Agreement compared with experimental data.