Abstract
The structure of even-even Er isotopes with neutron number 86 ⩽ N ⩽ 96 are studied within the framework of the IBA model. We first perform a traditional IBA calculation by taking Z = 64 and N = 82 as a closed shell. The agreements between the calculated and the observed energy levels are not good even when a g-boson is included in the calculation. This means that Z = 64 and N = 82 is not a good closed shell. In order to take into account the partially closed effects near Z = 64, a smooth variation of the effective boson numbers are assumed. The energy levels and B(E2) values of the above nuclei are calculated. It is found that the agreements between the theoretical and observed data are much better in the model of the effective boson consideration.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
