Large scale shell model calculations for even-even 62-66Fe isotopes
Abstract
The recently measured experimental data of Legnaro National Laboratories on neutron rich even isotopes of 62-66Fe with A=62,64,66 have been interpreted in the framework of large scale shell model. Calculations have been performed with a newly derived effective interaction GXPF1A in full fp space without truncation. The experimental data is very well explained for 62Fe, satisfactorily reproduced for 64Fe and poorly fitted for 66Fe. The increasing collectivity reflected in experimental data when approaching N=40 is not reproduced in calculated values. This indicates that whereas the considered valence space is adequate for 62Fe, inclusion of higher orbits from sdg shell is required for describing 66Fe.
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