Centrifugal stretching from lifetime measurements in the 170 Hf ground state band
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Smith, M.K.
Werner, V.
Terry, J.R.
Pietralla, N.
Petkov, P
Berant, Z
Casperson, R.J.
Heinz, A.
Henning, G.
Luttke, R.
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American Physical Society
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Centrifugal stretching in the deformed rare-earth nucleus 170Hf is investigated using high-precision lifetime measurements, performed with the New Yale Plunger Device at Wright Nuclear Structure Laboratory, Yale University. Excited states were populated in the fusion-evaporation reaction 124Sn(50Ti,4n)170Hf at a beam energy of 195 MeV. Recoil distance doppler shift data were recorded for the ground state band through the J=16+ level. The measured B(E2) values and transition quadrupole moments improve on existing data and show increasing ? deformation in the ground state band of 170Hf. The results are compared to descriptions by a rigid rotor and by the confined ?-soft rotor model. � 2013 American Physical Society.
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Physical Review C: Nuclear Physics
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