Probing the maximally deformed light rare-earth region around the drip-line nucleus $^{130}$Sm

Abstract : The neutron deficient rare-earth nuclei of the A~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 β2 ~ 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 76Kr beam, delivered by the SPIRAL facility, was used to bombard a thin 58Ni target. Emitted γ-rays were detected by the EXOGAM γ-ray spectrometer which was, for the first time, coupled with both the DIAMANT charged-particle array and the VAMOS spectrometer.
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Submitted on : Thursday, August 24, 2006 - 11:27:34 AM
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M. Petri, E.S. Paul, P.J. Nolan, A.J. Boston, R.J. Cooper, et al.. Probing the maximally deformed light rare-earth region around the drip-line nucleus $^{130}$Sm. International Conference on Finite Fermionic Systems: Nilsson Model 50 Years, Jun 2005, Lund, Sweden. pp.214-215, ⟨10.1088/0031-8949/2006/T125/057⟩. ⟨in2p3-00089856⟩

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