Low-lying levels in 194Os and the prolate—oblate phase transition

Casten, R. F.; Namenson, A.I.; Davidson, W.F.; Warner, D.D.; Börner, H. G.

doi:10.1016/0370-2693(78)90787-6

Cited by 47 publications

(25 citation statements)

References 17 publications

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“…The possibility of 194 Os having an oblate deformed ground state has also been proposed by Casten et al, [36]. The yrast states in 194 Os have been reported up to I π = (10 + ) by Wheldon et al, using deep inelastic reactions [37].…”

Section: Resultsmentioning

confidence: 72%

Multipleβ−decaying states in194Re: Shape evolution in neutron-rich osmium isotopes

et al. 2012

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β decays from heavy, neutron-rich nuclei with A ∼ 190 have been investigated following their production via the relativistic projectile fragmentation of an E/A = 1 GeV 208 Pb primary beam on a ∼2.5 g/cm 2 9 Be target. The reaction products were separated and identified using the GSI FRagment Separator (FRS) and stopped in the RISING active stopper. Gamma decays were observed and correlated with these secondary ions on an event-by-event basis such that γ ray transitions following from both internal (isomeric) and β decays were recorded. A number of discrete, β-delayed γ-ray transitions associated with β decays from

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Section: Resultsmentioning

confidence: 72%

Multipleβ−decaying states in194Re: Shape evolution in neutron-rich osmium isotopes

et al. 2012

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“…From a consideration of O (6) Another empirical quantity, which has been used to infer the prolate-oblate shape-transition regions, is the energy ratio E(2 [58]. Figure 15 Ref.…”

Section: B Triaxial Softness Around N = 116mentioning

confidence: 99%

“…A second quantity used to infer prolate-oblate shapetransition regions is the energy difference between the E(2 + 2 ) and E(4 + ) levels [58]. According to Kumar [60], a negative value of E(2 + 2 ) − E(4 + ) (i.e., the second 2 + state lying lower in energy than the yrast 4 + state) is a good indicator of a region of prolate-oblate phase transition.…”

Section: B Triaxial Softness Around N = 116mentioning

confidence: 99%

β−-delayed spectroscopy of neutron-rich tantalum nuclei: Shape evolution in neutron-rich tungsten isotopes

Alkhomashi¹,

Regan²,

Podolyák³

et al. 2009

Phys. Rev. C

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The low-lying structure of 188,190,192 W has been studied following β decays of the neutron-rich mother nuclei 188,190,192 Ta produced following the projectile fragmentation of a 1-GeV-per-nucleon 208 Pb primary beam on a natural beryllium target at the GSI Fragment Separator. The β-decay half-lives of 188 Ta, 190 Ta, and 192 Ta have been measured, with γ -ray decays of low-lying states in their respective W daughter nuclei, using heavy-ion β-γ correlations and a position-sensitive silicon detector setup. The data provide information on the low-lying excited states in 188 W, 190 W, and 192 W, which highlight a change in nuclear shape at 190 W compared with that of lighter W isotopes. This evolution of ground-state structure along the W isotopic chain is discussed as evidence for a possible proton subshell effect for the A ∼ 190 region and is consistent with maximization of the γ -softness of the nuclear potential around N ∼ 116.

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“…This has been interpreted as a shape transition into oblate shape for the Os chain [30]. However, no such increase is observed in either 116 Ru nor 118 Ru, implying that the triaxial nature of these nuclei persists.…”

Section: Discussionmentioning

confidence: 99%

Shape evolution in116,118Ru: Triaxiality and transition between the O(6) and U(5) dynamical symmetries

Söderström¹,

Lorusso²,

Watanabe³

et al. 2013

Phys. Rev. C

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Low-lying levels in 194Os and the prolate—oblate phase transition

Cited by 47 publications

References 17 publications

Multipleβ−decaying states in194Re: Shape evolution in neutron-rich osmium isotopes

Multipleβ−decaying states in194Re: Shape evolution in neutron-rich osmium isotopes

β−-delayed spectroscopy of neutron-rich tantalum nuclei: Shape evolution in neutron-rich tungsten isotopes

Shape evolution in116,118Ru: Triaxiality and transition between the O(6) and U(5) dynamical symmetries

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