Multiphonon Vibrations at High Angular Momentum in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">O</mml:mi><mml:mi mathvariant="normal">s</mml:mi></mml:mrow><mml:mprescripts /><mml:none /><mml:mn>182</mml:mn></mml:mmultiscripts></mml:math>

Pattison, L. K.; Cullen, D. M.; Smith, J. F.; Fletcher, A. M.; Walker, P. M.; El-Masri, H.; Podolyák, Zs.; Wood, R J; Scholey, C.; Wheldon, C.; Mukherjee, G.; Balabanski, D. L.; Djongolov, M.; Dalsgaard, Th; Thisgaard, Helge; Sletten, G.; Kondev, F. G.; Jenkins, D. G.; Lane, G. J.; Lee, I-Y; Macchiavelli, A. O.; Frauendorf, S.; Almehed, D.

doi:10.1103/physrevlett.91.182501

Cited by 16 publications

(5 citation statements)

References 11 publications

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“…In this circumstance, it is reasonable to consider whether a K 2 = p + γ-vibrational excitation along the symmetry axis might require less energy. Indeed, in 182 Os, with more γ softness, it is remarkable to find the appearance of just this kind of multi-phonon vibrational structure above its K 25 = p + isomer [143], interpreted by comparison with tilted-axis cranking calculations. It seems, therefore, that there is a limit to high-K rotation, because vibrational excitations become energetically favoured.…”

Section: K Bandsmentioning

confidence: 97%

High-Kisomerism in rotational nuclei

Walker

Fang

2015

Phys. Scr.

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High-K isomers are excited metastable excitations that are found amongst the rotational states of deformed atomic nuclei. They exemplify the coexistence of single-particle and collective degrees of freedom. We review their properties and their theoretical description based on extensions of the Nilsson–Strutinsky approach. Emphasis is given to the limits of K-isomer existence, exotic shapes, fission, K-isomer collective rotations, and the possibilities for isomer manipulation.

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Section: K Bandsmentioning

confidence: 97%

High-Kisomerism in rotational nuclei

Walker

Fang

2015

Phys. Scr.

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“…Specifically, Refs. [4,5] interpreted the ∆I = 1 sequences of fixed parity in 182 Os as a tidal wave running over a triaxial surface, and Ref. [6] interpreted the alternating-parity sequences in 220 Th as a reflection-asymmetric tidal wave traveling over a spherical core.…”

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confidence: 99%

Tidal Waves inPd102: A Rotating Condensate of MultipledBosons

et al. 2013

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Low-lying collective excitations in even-even vibrational and transitional nuclei may be described semiclassically as quadrupole running waves on the surface of the nucleus ("tidal waves"), and the observed vibrational-rotational behavior can be thought of as resulting from a rotating condensate of interacting d bosons. These concepts have been investigated by measuring lifetimes of the levels in the yrast band of the (102)Pd nucleus with the Doppler shift attenuation method. The extracted B(E2) reduced transition probabilities for the yrast band display a monotonic increase with spin, in agreement with the interpretation based on rotation-induced condensation of aligned d bosons.

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“…These vibrational modes simultaneously break the axial symmetry and the reflection symmetry. Moreover, some experimental data for γ-vibrations (quadrupole shape vibration that breaks the axial symmetry) at high spin have been reported [195,196]. It has been discussed for a long time that the triaxial deformation may be realized at high spin states due to the weakening of the pairing correlations.…”

Section: Vibrational and Rotational Modes At High Angular Momentummentioning

confidence: 99%

Microscopic derivation of the Bohr–Mottelson collective Hamiltonian and its application to quadrupole shape dynamics

et al. 2016

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We discuss the nature of the low-frequency quadrupole vibrations from smallamplitude to large-amplitude regimes. We consider full five-dimensional quadrupole dynamics including three-dimensional rotations restoring the broken symmetries as well as axially symmetric and asymmetric shape fluctuations. Assuming that the time-evolution of the self-consistent mean field is determined by five pairs of collective coordinates and collective momenta, we microscopically derive the collective Hamiltonian of Bohr and Mottelson, which describes low-frequency quadrupole dynamics. We show that the five-dimensional collective Schrödinger equation is capable of describing large-amplitude quadrupole shape dynamics seen as shape coexistence/mixing phenomena. We summarize the modern concepts of microscopic theory of large-amplitude collective motion, which is underlying the microscopic derivation of the Bohr-Mottelson collective Hamiltonian.

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Multiphonon Vibrations at High Angular Momentum inOs182

Cited by 16 publications

References 11 publications

High-Kisomerism in rotational nuclei

High-Kisomerism in rotational nuclei

Tidal Waves inPd102: A Rotating Condensate of MultipledBosons

Microscopic derivation of the Bohr–Mottelson collective Hamiltonian and its application to quadrupole shape dynamics

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