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Published on: April 11, 2014
Structure of 240Pu: evidence for octupole phonon condensation?
X Wang1, R V F Janssens, M P Carpenter
1Argonne National Laboratory, Argonne, Illinois 60439, USA.
Abstract:
The expanded level structure of 240Pu available from the present study highlights the role of strong octupole correlations in this nucleus. In addition to a delayed alignment in the yrast band, the observations include the presence of both I(+)-->(I-1)(-) and I(-)-->(I-1)(+)E1 transitions linking states of the yrast and negative-parity bands at high spin and the presence of an additional even-spin, positive-parity band deexciting exclusively to the negative-parity sequence. The observations appear to be consistent with expectations based on the recently proposed concept of octupole phonon condensation.
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