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arXiv · 1402.5944

Nuclear Structure Towards N=40 60Ca: In-beam gamma-ray Spectroscopy of 58,60Ti

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. Lauritsen·I. 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
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Abstract

Excited states in the neutron-rich N=38,36 nuclei \nuc{60}{Ti} and \nuc{58}{Ti} were populated in nucleon-removal reactions from \nuc{61}{V} projectiles at 90~MeV/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 \sim 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, \nuc{58,60}{Ti} provide some of the most neutron-rich benchmarks accessible today for calculations attempting to determine the structure of the potentially doubly-magic nucleus \nuc{60}{Ca}.

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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. Lauritsen, I. 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. 2014-02-24. Nuclear Structure Towards N=40 60Ca: In-beam gamma-ray Spectroscopy of 58,60Ti. https://doi.org/10.1103/physrevlett.112.112503

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