학술논문
Nuclear Structure Towards N=40 60Ca: In-beam gamma-ray Spectroscopy of 58,60Ti
Document Type
Working Paper
Author
Gade, A.; Janssens, R. V. F.; Weisshaar, D.; Brown, B. A.; Lunderberg, E.; Albers, M.; Bader, V. M.; Baugher, T.; Bazin, D.; Berryman, J. S.; Campbell, C. M.; Carpenter, M. P.; Chiara, C. J.; Crawford, H. L.; Cromaz, M.; Garg, U.; Hoffman, C. R.; Kondev, F. G.; Langer, C.; Lauritsen, T.; Lee, I. Y.; Lenzi, S. M.; Matta, J. T.; Nowacki, F.; Recchia, F.; Sieja, K.; Stroberg, S. R.; Tostevin, J. A.; Williams, S. J.; Wimmer, K.; Zhu, S.
Source
Phys. Rev. Lett. 112, 112503 (2014)
Subject
Language
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 \gamma-ray transitions from such states in these Ti isotopes were detected with the advanced \gamma-ray tracking array GRETINA and were corrected event-by-event for large Doppler shifts (v/c \sim 0.4) using the \gamma-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}.
Comment: Accepted for publication in Physical Review letters
Comment: Accepted for publication in Physical Review letters