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Scholes, D. T.; Cullen, D. M.; Kondev, F. G.; Janssens, R. V. F.; Carpenter, M. P.; Hartley, D. J.; Djongolov, M.; Sletten, G.; Hagemann, G.B.; Wheldon, C.; Walker, P. M.; Saleem, K. Abu; Ahmad, I.; Balabanski, D. L.; Chowdhury, P.; Danchev, M.; Dracoulis, George; El-Masri, H.; Goon, J. Tm.; Heinz, A.; Kaye, R. A.; Khoo, T. L.; Lauritsen, T.; Lister, C. J.; Moore, E. F.; Riedinger, L. L.; Riley, M. A.; Seweryniak, D.; Shestakova, I.; Wiedenhöver, I.; Zeidan, O.; Zhang, Jing Ye

doi:10.1103/physrevc.70.054314

Cited by 30 publications

(12 citation statements)

References 36 publications

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“…A smooth decrease in the J (2) moment is observed for the TSD1 and TSD2 bands (see Fig. 17), which is consistent with the general trend of TSD bands in the other Hf isotopes [11,13,70]. Figure 17 also displays three configurations that have characteristics similar to the two observed TSD bands.…”

Section: Tsd1 and Tsd2 Bandssupporting

confidence: 81%

“…An extensive search for TSD bands in Hf (Z = 72) isotopes has also been carried out, and a number of strongly deformed bands have been observed in [170][171][172][173][174][175] Hf [9][10][11][12][13], where bands in 170 Hf [9] and 174 Hf [11] have been tentatively assigned as triaxial. On the other hand, the predicted TSD bands in 164 Hf and 166 Hf have not been discovered.…”

Section: Introductionmentioning

confidence: 99%

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Interpretation of the large-deformation high-spin bands in selectA=158–168 nuclei

et al. 2012

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The high-spin rotational bands in 168 Hf and the triaxial bands in Lu nuclei are analyzed using the configuration-constrained cranked Nilsson-Strutinsky (CNS) model. Special attention is given to the up-sloping extruder orbitals. The relative alignment between the bands which appear to correspond to triaxial shape is also considered, including the yrast ultrahigh-spin band in 158 Er. This comparison suggests that the latter band is formed from rotation around the intermediate axis. In addition, the standard approximations of the CNS approach are investigated, indicating that the errors which are introduced by the neglect of off-shell matrix elements and the cutoff at nine oscillator shells (N max = 8) are essentially negligible compared to other uncertainties. On the other hand, the full inclusion of the hexadecapole degree of freedom is more significant; for example it leads to a decrease of the total energy of ∼ 500 keV in the triaxial superdeformed (TSD) region of 168 Hf.

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Section: Tsd1 and Tsd2 Bandssupporting

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Interpretation of the large-deformation high-spin bands in selectA=158–168 nuclei

et al. 2012

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“…In the neighboring Hf (Z = 72) isotopes, evidences for TSD bands have also been presented [44][45][46][47]. The cranking formalism has predicted pronounced minima around (ε 2 ,γ ) ∼ (0.4,20 • ) which are caused by shell gaps for proton numbers Z = 71 and 72, and neutron numbers N = 94 and 97 [40,48].…”

Section: E Tsd Bandsmentioning

confidence: 91%

Interpretation of the high spin states inLu161: A paired and unpaired study

Carlsson

Ragnarsson

et al. 2014

Phys. Rev. C

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A paired cranked Nilsson-Strutinsky-Bogoliubov (CNSB) model is presented, which employs the same method to calculate the liquid-drop energy and moment of inertia as the unpaired cranked Nilsson-Strutinsky (CNS) model. In the CNSB model, the energy minimization is carried out in the mesh of pairing gaps and Fermi levels λ as well as deformation parameters. The high spin states in 161 Lu are then investigated with the CNSB and CNS models. The terminating structure shows a striking similarity with these two models. Combining the CNSB and CNS models, a complete understanding of high spin structures, including the normal deformed (ND) and triaxial strongly deformed (TSD) bands and observed side bands in 161 Lu, is achieved. It appears that the only important paired crossings are the first i 13/2 neutron crossing and the first h 11/2 proton crossing. For the description of the unpaired high spin crossings, it is important to be able to distinguish between the pseudospin partners in the proton N = 4 shell, (d 5/2 ,g 7/2 ) and (d 3/2 ,s 1/2 ). The yrast bands are predicted to terminate, which explains the structure of a TSD-like band X2. A band crossing at I ≈ 36.5 for the TSD band in 161 Lu, unique within the chain of even-N Lu isotopes, is well described by the CNSB model.

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“…A number of high-spin strongly deformed bands were reported in the heavier Hf isotopes, e.g., in 170 Hf [16], 173 Hf [17], 174 Hf [17,18], and 175 Hf [19]. Some of these bands were suggested to be of TSD character [16,18,19], but such assignments raised several questions.…”

Section: Introductionmentioning

confidence: 99%

“…Some of these bands were suggested to be of TSD character [16,18,19], but such assignments raised several questions. A majority of these bands was observed in the heavier Hf nuclei, for example, eight in 174 Hf 102 , which is rather far away from the predicted neutron shell gaps.…”

Section: Introductionmentioning

confidence: 99%

Quadrupole moment measurements for strongly deformed bands inHf171,172

Mukhopadhyay

Janssens

et al. 2011

Phys. Rev. C

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A lifetime experiment, using the Doppler-shift attenuation method, has been performed at Gammasphere to measure the transition quadrupole moments Q t of strongly deformed bands in 171 Hf and 172 Hf. The measured value of Q t ∼ 9.5 e b for the band labeled ED in 171 Hf strongly supports the recent suggestion that this sequence and several structures with similar properties in neighboring Hf isotopes are associated with a near-prolate shape with a deformation enhanced relative to that of normal deformed structures. The measured values of Q t ∼ 14 e b for the bands labeled SD1 and SD3 in 172 Hf confirm that these sequences are associated with a prolate superdeformed shape, a property inferred in earlier work from other measured characteristics of the bands. Similar bands in 173−175 Hf are also likely to be associated with superdeformed shapes. The observations are in contrast to predictions of cranking calculations performed with the ULTIMATE CRANKER code.

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Highly deformed Bands inHf175

Cited by 30 publications

References 36 publications

Interpretation of the large-deformation high-spin bands in selectA=158–168 nuclei

Interpretation of the large-deformation high-spin bands in selectA=158–168 nuclei

Interpretation of the high spin states inLu161: A paired and unpaired study

Quadrupole moment measurements for strongly deformed bands inHf171,172

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