DOI
10.1103/PhysRevLett.110.242701
Abstract
Intermediate-energy Coulomb excitation measurements are performed on the N≥40 neutron-rich nuclei 66, 68Fe and 64Cr. The reduced transition matrix elements providing a direct measure of the quadrupole collectivity B(E2; 2+1→ 0+1) 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.
Document Type
Article
Publication Date
6-13-2013
Publisher Statement
Copyright © 2013 The American Physical Society. This article first appeared in Physical Review Letters 110, no. 24 (June 13, 2013): 242701: 1-42701: 5. doi:10.1103/PhysRevLett.110.242701.
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Recommended Citation
Crawford, H. L., 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, S. M. Lenzi, F. Nowacki, S. Paschalis, M. Petri, A. Poves, A. Ratkiewicz, T. J. Ross, E. Sahin, D. Weisshaar, K. Wimmer, and R. Winkler. "Quadrupole Collectivity in Neutron-Rich Fe and Cr Isotopes." Physical Review Letters 110, no. 24 (June 13, 2013): 242701: 1-42701: 5. doi:10.1103/PhysRevLett.110.242701.