Mixed symmetry states for 70Zn, 72Ge, 74Se, 76Kr isotones by using IBM-2

• Published in: Journal of physics. Conference series Vol. 1234; no. 1
• Main Authors: Abdul Kadhim Hadi Al-Sadi, Mohammed, Shakir Kadhim, Qasim, Hassan Abdul Zahrah Yasi, Salwan
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.07.2019
• Subjects: electric quadrople transition B(E2); Energy levels; IBM-2; Kr Isotones; magnetic dipole B(M1); Magnetic dipoles; Mixed Symmetry state (MSS); Mixing ratio; Mixing ratios δ(E2/M1); Nuclear properties; Nuclei (nuclear physics); Physics; Protons; Symmetry; Wave functions
• ISSN: 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/1234/1/012034

In present study we have calculated some nuclear properties for 70Zn, 72Ge, 74Se, 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 (25+,31+,51+,11+) 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 41+/21+ and 61+/21+ it was found that these isotones have a varied dynamic symmetries. Starting from the symmetry U(5) of the 70Zn nuclei then passing through the transition region between (U5-O6) for 72Ge, 74Se nuclei and finally approaching to the O(6) symmetry for 76Kr 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.