Abstract

A Doppler shift attenuation measurement has been carried out to determine the collectivity of the superdeformed band in 150Gd. The data was found to be consistent with a constant inband quadrupole moment of 17 ± 3 eb. This corresponds to a quadrupole deformation of ß 2≈0.58. In addition the measurement has resolved important questions regarding the de-excitation of the band, confirming the rapid de-excitation of the superdeformed band in 150Gd with more than 80% of the band intensity being lost over one transition.

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