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Isospin and Symmetry Exatations in Light Nuclei Silicon ( 28-32Si) and Magnesium ( 22-26Mg) Isotopes. | ||
| Journal of Basrah Researches (Sciences) | ||
| Article 1, Volume 37, Issue 5, 2011, Pages 31-49 PDF (0 K) | ||
| Authors | ||
| Musa Mohammed Mahdy; ; F. H. Khudair | ||
| Abstract | ||
| The interacting boson model with isospin (IBM-3) has been used to study the positive parity states in (even-even) 28-32Si and 22-26Mg isotopes . The bands structure and symmetry have been investigated . Special attention is given to the occurrence isospin excitations . To identify nuclei's shape , the energy ratios were calculated . The reduced electric quadruple transitions probability B(E2), the magnetic dipole transitions B(M1) and branch ratios were calculated , and these transitions were compared with available experimental data , well as we study the energy levels for Si and Mg as a function of Majorana parameters which are so necessary for the identification of the mixed symmetry states .The calculated results are compared with available experimental data , and they are in general good agreement . according to our theoretical results , we found that the silicon isotopes belong to the O(6) limit (γ-unstable), while the magnesium isotopes appears the limits of U(5) and Su(3) according to IBM-3 limits properties . It was pointed out that IBM-3 is equitably reliable for the description of spectra and other properties of these nuclei . | ||
| Keywords | ||
| IBM | ||
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