Nuclear structure towards N=40 Ca 60: In-Beam γ-ray spectroscopy of Ti 58,60

A. Gade, R. V.F. Janssens, D. Weisshaar, B. A. Brown, E. Lunderberg, M. Albers, V. M. Bader, T. Baugher, D. Bazin, J. S. Berryman, C. M. Campbell, M. P. Carpenter, C. J. Chiara, H. L. Crawford, M. Cromaz, U. Garg, C. R. Hoffman, F. G. Kondev, C. Langer, T. LauritsenI. Y. Lee, S. M. Lenzi, J. T. Matta, F. Nowacki, F. Recchia, K. Sieja, S. R. Stroberg, J. A. Tostevin, S. J. Williams, K. Wimmer, S. Zhu

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

Excited states in the neutron-rich N=38, 36 nuclei Ti60 and Ti58 were populated in nucleon-removal reactions from V61 projectiles at 90MeV/nucleon. The γ-ray transitions from such states in these Ti isotopes were detected with the advanced γ-ray tracking array GRETINA and were corrected event by event for large Doppler shifts (v/c∼0.4) using the γ-ray interaction points deduced from online signal decomposition. The new data indicate that a steep decrease in quadrupole collectivity occurs when moving from neutron-rich N=36, 38 Fe and Cr toward the Ti and Ca isotones. In fact, Ti58,60 provide some of the most neutron-rich benchmarks accessible today for calculations attempting to determine the structure of the potentially doubly magic nucleus Ca60.

Original languageEnglish
Article number112503
JournalPhysical Review Letters
Volume112
Issue number11
DOIs
StatePublished - Mar 21 2014
Externally publishedYes

Funding

FundersFunder number
National Science FoundationPHY-1068217; PHY-1068192, PHY-1102511
U.S. Department of EnergyDE-AC02-05CH11231, DE-AC02-06CH11357, DE-FG02-94-ER40834
Directorate for Mathematical and Physical Sciences1068192, 1102511, 1068217

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