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

Journal Article · Fri Mar 27 04:00:00 EDT 2009 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.102.122501· OSTI ID:21180316

Wang, X ^[1]; Janssens, R V. F.; Carpenter, M P; Zhu, S; Ahmad, I; Greene, J P; Khoo, T L; Lauritsen, T; Lister, C J; Seweryniak, D ^[1]; Wiedenhoever, I; Bernstein, A; Diffenderfer, E; Teal, C; Wilson, P ^[2]; Garg, U; Frauendorf, S ^[3]; Nakatsukasa, T ^[4]; Freeman, S J ^[1]; Kondev, F G ^[5]

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1. Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
2. Department of Physics, Florida State University, Tallahassee, Florida 32306 (United States)
3. Physics Department, University of Notre Dame, Notre Dame, Indiana 46556 (United States)
4. RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)
5. Nuclear Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)

The expanded level structure of {sup 240}Pu 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{sup +}{yields}(I-1){sup -} and I{sup -}{yields}(I-1){sup +}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.

• OSTI ID: 21180316
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 12 Vol. 102; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
E1-TRANSITIONS
OCTUPOLES
PARITY
PHONONS
PLUTONIUM 240
SPIN