Quadrupole Collectivity in Neutron-Rich Fe and Cr Isotopes
- H. L., Crawford
- R. M., Clark
- P., Fallon
- A. O., Macchiavelli
- T., Baugher
- D., Bazin
- C. W., Beausang
- J. S., Berryman
- D. L., Bleuel
- C. M., Campbell
- M., Cromaz
- G., de Angelis
- A., Gade
- R. O., Hughes
- I. Y., Lee
- Lenzi, SILVIA MONICA
- F., Nowacki
- S., Paschalis
- M., Petri
- A., Poves
- A., Ratkiewicz
- T. J., Ross
- E., Sahin
- D., Weisshaar
- K., Wimmer
- R., Winkler
Publication date
January 2013
DOI Publisher
American Physical Society (APS)Abstract
Intermediate-energy Coulomb excitation measurements are performed on the N 6540 neutron-rich nuclei 66,68Fe and 64Cr. The reduced transition matrix elements providing a direct measure of the quadrupole collectivity B(E2;21+\u219201+) are determined for the first time in 68Fe42 and 64Cr40 and confirm a previous recoil distance method lifetime measurement in 66Fe40. The results are compared to state-of-the-art large-scale shell-model calculations within the full fpgd neutron orbital model space using the Lenzi-Nowacki-Poves-Sieja effective interaction and confirm the results of the calculations that show these nuclei are well deformed
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