arXiv:nucl-th/0210089·v1·Nuclear Theory
How magic is the magic 68Ni nucleus?
K. Langanke🇩🇰 · J. Terasaki🇺🇸 · F. Nowacki🇫🇷 · D.J. Dean🇺🇸 · W. Nazarewicz🇺🇸
Abstract
We calculate the B(E2) strength in 68Ni and other nickel isotopes using several theoretical approaches. We find that in 68Ni the gamma transition to the first 2+ state exhausts only a fraction of the total B(E2) strength, which is mainly collected in excited states around 5 MeV. This effect is sensitive to the energy splitting between the fp shell and the g_{9/2}orbital. We argue that the small experimental B(E2) value is not strong evidence for the double-magic character of 68Ni.
Comments: 4 pages, 4 figures