Probing the maximally deformed light rare-earth region around the drip-line nucleus Sm-130

Marina Petri, E. S. Paul, P. J. Nolan, A. J. Boston, R. J. Cooper, M. R. Dimmock, S. Gros, B. M. McGuirk, H. C. Scraggs, G. Turk, B. Rosse, M. Meyer, N. Redon, Ch Schmitt, O. Stezowski, D. Guinet, Ph Lautesse, G. De France, S. Bhattachasyya, G. MukherjeeF. Rejmund, M. Rejmund, H. Savajols, J. N. Scheurer, A. Astier, I. Deloncle, A. Prevost, B. M. Nyako, J. Gal, J. Molnar, J. Timar, L. Zolnai, K. Juhasz, V. F. E. Pucknell, R. Wadsworth, P. Joshi, G. La Rana, R. Moro, M. Trotta, E. Vardaci, G. Hackman, G. Ball

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The neutron deficient rare-earth nuclei of the A similar to 130 region are of particular interest since highly deformed prolate ground states are expected. Indeed these nuclei are predicted to show maximal ground-state deformations of beta(2) similar to 0.40 (axis ratio of 3:2), comparable to the deformation deduced for superdeformed cerium isotopes at high spin. A fusion-evaporation experiment was performed with radioactive ion beams at GANIL in October 2004 which had the goal to reach very proton-rich exotic nuclei located near the proton drip-line. A radioactive Kr-76 beam, delivered by the SPIRAL facility, was used to bombard a thin Ni-58 target. Emitted gamma-rays were detected by the EXOGAM gamma-ray spectrometer which was, for the first time, coupled with both the DIAMANT charged-particle array and the VAMOS spectrometer.

Original languageEnglish
Pages (from-to)214-215
Number of pages2
JournalPhysica Scripta
Publication statusPublished - Jul 2006

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