Development of shell closures at N=32,34. II. Lowest yrast excitations in even-even Ti isotopes from deep-inelastic heavy-ion collisions

B. Fornal, S. Zhu, R. V. F. Janssens, M. Honma, R. Broda, P. F. Mantica, B. A. Brown, M. P. Carpenter, P. J. Daly, S. J. Freeman, Z. W. Grabowski, N. J. Hammond, F. G. Kondev, W. Królas, T. Lauritsen, S. N. Liddick, C. J. Lister, E. F. Moore, T. Otsuka, T. Pawłat, D. Seweryniak, B. E. Tomlin, and J. Wrzesiński
Phys. Rev. C 70, 064304 – Published 7 December 2004

Abstract

Gamma rays from neutron-rich nuclei in the vicinity of Z=20, N=28 have been studied at Gammasphere using deep-inelastic reactions induced by a 330MeV Ca48 beam on a thick U238 target. The yrast γ-ray cascade of Ti56 was identified for the first time and the location in energy of the 2+, 4+, and 6+ states was determined. The low-spin Ti56 yrast structure does not support the presence of a subshell closure at N=34 as suggested on the basis of other data on nuclei in the region as well as shell model calculations with a recently proposed interaction.

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  • Received 28 July 2004

DOI:https://doi.org/10.1103/PhysRevC.70.064304

©2004 American Physical Society

Authors & Affiliations

B. Fornal1, S. Zhu2, R. V. F. Janssens2, M. Honma3, R. Broda1, P. F. Mantica4,5, B. A. Brown4,6, M. P. Carpenter2, P. J. Daly7, S. J. Freeman2,8, Z. W. Grabowski7, N. J. Hammond2, F. G. Kondev9, W. Królas1, T. Lauritsen2, S. N. Liddick4,5, C. J. Lister2, E. F. Moore2, T. Otsuka10, T. Pawłat1, D. Seweryniak2, B. E. Tomlin4,5, and J. Wrzesiński1

  • 1Institute of Nuclear Physics, Polish Academy of Sciences, PL-31342 Cracow, Poland
  • 2Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
  • 3Center for Mathematical Sciences, University of Aizu, Tsuruga, Ikki-machi, Aizu-Wakamatsu, Fukushima 965-8580, Japan
  • 4National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
  • 5Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
  • 6Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
  • 7Chemistry and Physics Departments, Purdue University, West Lafayette, Indiana 47907, USA
  • 8Department of Physics and Astronomy, Schuster Laboratory, University of Manchester, Manchester M13 9PL, United Kingdom
  • 9Nuclear Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
  • 10Department of Physics, University of Tokyo, Hongo, Tokyo 113-0033, Japan and RIKEN, Hirosawa,Wako-shi, Saitama 351-0198, Japan

See Also

Development of shell closures at N=32,34. I. β decay of neutron-rich Sc isotopes

S. N. Liddick, P. F. Mantica, R. Broda, B. A. Brown, M. P. Carpenter, A. D. Davies, B. Fornal, T. Glasmacher, D. E. Groh, M. Honma, M. Horoi, R. V. F. Janssens, T. Mizusaki, D. J. Morrissey, A. C. Morton, W. F. Mueller, T. Otsuka, J. Pavan, H. Schatz, A. Stolz, S. L. Tabor, B. E. Tomlin, and M. Wiedeking
Phys. Rev. C 70, 064303 (2004)

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Vol. 70, Iss. 6 — December 2004

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