Interplay between octupole and quasiparticle excitations in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow /><mml:mrow><mml:mn>178</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mi mathvariant="normal">Hg</mml:mi></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow /><mml:mrow><mml:mn>180</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mi mathvariant="normal">Hg</mml:mi></mml:math>

Kondev, F. G.; Janssens, R. V. F.; Carpenter, M. P.; Saleem, K. Abu; Ahmad, I.; Alcorta, M.; Amro, H.; Bhattacharyya, P.; Brown, L. T.; Caggiano, J. A.; Davids, C. N.; Fischer, Susan M.; Heinz, A.; Herskind, B.; Kaye, R. A.; Khoo, T. L.; Lauritsen, T.; Lister, C. J.; C., W.; Nouicer, R.; Ressler, J. J.; Reviol, W.; Riedinger, L. L.; Sarantites, D. G.; Seweryniak, D.; Siem, S.; Sonzogni, A. A.; Uusitalo, J.; Varmette, P. G.; Wiedenhöver, I.

doi:10.1103/physrevc.62.044305

Cited by 37 publications

(30 citation statements)

References 35 publications

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“…Excited levels in 178 Hg up to J π = 20 + have been investigated by Kondev et al using the Gammasphere spectrometer coupled to the FMA [20,26]. The low statistics obtained for the β-γ coincidences prevented the identification of γ rays in 178 Hg after β decay of 178 Tl, so no useful β-γ information was available for 178 Tl from the present study.…”

Section: B α-Andβ-decay Branching Ratios Of 178 Tlmentioning

confidence: 70%

β-delayed fission andαdecay of178Tl

Liberati¹,

Andreyev²,

Antalic³

et al. 2013

Phys. Rev. C

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ReuseItems deposited in White Rose Research Online are protected by copyright, with all rights reserved unless indicated otherwise. They may be downloaded and/or printed for private study, or other acts as permitted by national copyright laws. The publisher or other rights holders may allow further reproduction and re-use of the full text version. This is indicated by the licence information on the White Rose Research Online record for the item. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request.PHYSICAL REVIEW C 88, 044322 (2013) A detailed nuclear-decay spectroscopy study of the neutron-deficient isotope 178 Tl has been performed using the highly selective Resonance Ionization Laser Ion Source and ISOLDE mass separator (CERN), which allowed a unique isobarically pure beam of 178 Tl to be produced. The first identification of the β-delayed fission of this isotope was made and its probability P βDF ( 178 Tl) = 0.15(6)% was determined. An asymmetric fission fragment mass distribution of the daughter isotope 178 Hg (populated by the β decay of 178 Tl) was deduced based on the measured fission fragment energies. The fine-structure α-decay pattern of 178 Tl allowed the low-energy states in the daughter nucleus 174 Au to be studied.

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Section: B α-Andβ-decay Branching Ratios Of 178 Tlmentioning

confidence: 70%

β-delayed fission andαdecay of178Tl

Liberati¹,

Andreyev²,

Antalic³

et al. 2013

Phys. Rev. C

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“…In principle, it is possible that the K π = 5 − band could contain octupole admixtures, which would cause a lower spin for the (unobserved) band head, and a corresponding decrease in the K value associated with the band. Such behavior has been observed in the Os and Hf isotopes [26,27], where it has been proposed that the low-lying octupole vibration is crossed at moderate frequency by a shape-driving, two-quasiproton excitation. In fact, a J π = 3 − state has been proposed in 128 Xe [3] at an excitation energy of 2138.6 keV, but it is not observed in the current work.…”

Section: -7mentioning

confidence: 95%

Shape-driving effects in the triaxial nucleus,Xe128

et al. 2006

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An extended decay scheme for 128 Xe has been constructed by using data from the 124 Sn( 9 Be, 5n) 128 Xe reaction at a beam energy of 58 MeV. Bands have been identified as being built on several intrinsic states, including a proposed 9/2 − [514] ⊗ 1/2 + [400] two-quasineutron configuration that forms the K π = 5 − intrinsic state at 2228 keV, and on a previously assigned K π = 8 − intrinsic state at 2786 keV. A half-life of 73(3) ns has been measured for the latter. Theoretical calculations have been performed by using the configuration-constrained blocking method based on a nonaxial Woods-Saxon potential. Large γ deformation and γ softness are predicted for the ground state and the K π = 5 − intrinsic state, whereas a nearly axially symmetric shape is predicted for the K π = 8 − two-quasiparticle configuration. The low value of the hindrance factor for the E1 transition depopulating the K π = 8 − intrinsic state is discussed in the context of analogous transitions in neighbouring N = 74 isotones.

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“…Gamma-ray energies and I π values are taken from Refs. [15] and [16] and K = 0 is assumed. 186 isotopes are significantly lower.…”

Section: A Yrast States In 180 Hg and 182 Hgmentioning

confidence: 99%

Evolution of collectivity inHg180andHg182

Grahn¹,

Petts²,

Scheck³

et al. 2009

Phys. Rev. C

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Lifetimes of yrast states in 180 Hg up to the 8 + state and of the 9 − state have been extracted from recoil-decay tagged γ -ray spectra by using the recoil distance Doppler-shift method. In addition, lifetimes of yrast states up to the 10 + state in 182 Hg have been extracted from recoil-gated γ γ -coincidence spectra. The present study addresses the evolution of collectivity of two competing shapes in neutron-deficient Hg nuclei as a function of A and the configuration mixing at low spin.

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Interplay between octupole and quasiparticle excitations in178Hgand180Hg

Cited by 37 publications

References 35 publications

β-delayed fission andαdecay of178Tl

β-delayed fission andαdecay of178Tl

Shape-driving effects in the triaxial nucleus,Xe128

Evolution of collectivity inHg180andHg182

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