Structure of $^{240}$Pu: Evidence for Octupole Phonon Condensation?

Details Structure of $^{240}$Pu: Evidence for Octupole Phonon Condensation? Structure of $^{240}$Pu: Evidence for Octupole Phonon Condensation?

2009-02-24

arxiv.org/abs/0902.4179v1

Phys.Rev.Lett.102:122501,2009

Physics

Nuclear Physics

Nuclear Experiment

Accepted by Physical Review Letters on February 20, 2009

Scientific paper

10.1103/PhysRevLett.102.122501

The expanded level structure of $^{240}$Pu available from the present study highlights the role of strong octupole correlations in this nucleus. Besides a delayed alignment in the yrast band, the observations include the presence of both $I^{+}{\to}(I-1)^{-}$ and $I^{-}{\to}(I-1)^{+}$ 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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