Multi-quasiparticle sub-nanosecond isomers in 178W

Rudigier, M.; Walker, P. M.; Canavan, R.; Podolyák, Zs.; Regan, P. H.; Söderström, P.-A.; Lebois, M.; Wilson, J. N.; Jovančević, N.; Blazhev, A.; Benito, J.; Bottoni, S.; Brunet, Michel; Cieplicka-Oryńczak, N.; Courtin, S.; Doherty, D. T.; Fraile, L. M.; Hadyńska-Klęk, K.; Heine, M.; Iskra, Ł. W.; Jolie, J.; Karayonchev, V.; Kennington, A.; Koseoglou, P.; Lotay, G.; Lorusso, G.; Nakhostin, M.; Niță, Cristina; Oberstedt, S.; Qi, Liqiang; Régis, J.-M.; Sánchez-Tembleque, V.; Shearman, R.; Witt, William Edward; Vedia, V.; Zell, K. O.

doi:10.1016/j.physletb.2019.135140

Cited by 13 publications

(5 citation statements)

References 21 publications

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“…Due to the fact that the state of interest is below the long-lived 6 + isomer, we use delayed LaBr 3 (Ce) events in a similar way as described in Ref. [52]. A HPGe sum gate on the 1279 keV, 2 + 1 → 0 + 1 transition together with a prompt transition above the isomer is used to tag the 134 Te nucleus.…”

Section: B Remeasurement Of Half-lives In 134 Tementioning

confidence: 99%

Spectroscopy and lifetime measurements in Te134,136,138 isotopes and implications for the nuclear structure beyond N=82
Häfner¹,
Lozeva²,
Naïdja³
et al. 2021
Phys. Rev. C
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Section: B Remeasurement Of Half-lives In 134 Tementioning

confidence: 99%

Spectroscopy and lifetime measurements in Te134,136,138 isotopes and implications for the nuclear structure beyond N=82
Häfner¹,
Lozeva²,
Naïdja³
et al. 2021
Phys. Rev. C
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8
3
18
0
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“…The desired reaction was via 164 Dy( 18 O, 16 O) 166 Dy. The production of this channel was significantly suppressed relative to the main reaction channels (with cross sections approximately 10 3 times stronger than the 2n transfer) from the Coulomb excitation by inelastic scattering on the 164 Dy target nucleus, and the 164 Dy( 18 O, 4n) 178 W fusion evaporation reaction (a more detailed study of 178 W from this experiment can be found in [18]).…”

Section: Experimental Details and Reaction Channel Selectionmentioning

confidence: 92%

“…The states of interest in 166 Dy were populated at an experiment carried out using the accelerator at the ALTO facility at the IPN Orsay. A pulsed 18 O beam was provided at three separate primary energies of 71, 76, and 80 MeV, each with a pulse duration of 2 ns and a period of 400 ns, and an average current of 35 enA charge state Q = 6 + . A 164 Dy target of 6.3 mg/cm 2 and 95% isotopic enrichment was used with 1 mg/cm 2 Au backing.…”

Section: Experimental Details and Reaction Channel Selectionmentioning

confidence: 99%

Half-life measurements in Dy164,166 using γ−γ fast-timing spectroscopy with the
Canavan¹,
Rudigier²,
Regan³
et al. 2020
Phys. Rev. C
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We report on the measurement of lifetimes of excited states in the near-mid-shell nuclei 164,166 Dy using the gamma-ray coincidence fast-timing method. The nuclei of interest were populated using reactions between an 18 O beam and a gold-backed isotopically enriched 164 Dy target of thickness 6.3 mg/cm 2 at primary beam energies of 71, 76, and 80 MeV from the IPN-Orsay laboratory, France. Excited states were populated in 164 Dy, 166 Dy, and 178,179 W following Coulomb excitation, inelastic nuclear scattering, two-neutron transfer, and fusionevaporation reaction channels respectively. Gamma rays from excited states were measured using the ν-Ball high-purity germanium (HPGe)-LaBr 3 hybrid γ-ray spectrometer with the excited state lifetimes extracted using the fast-timing coincidence method using HPGe-gated LaBr 3-LaBr 3 triple coincident events. The lifetime of the first I π = 2 + excited state in 166 Dy was used to determine the transition quadrupole deformation of this neutron-rich nucleus for the first time. The experimental methodology was validated by showing consistency with previously determined excited state lifetimes in 164 Dy. The half-lives of the yrast 2 + states in 164 Dy and 166 Dy were 2.35(6) and 2.3(2) ns, respectively, corresponding to transition quadrupole moment values of Q 0 = 7.58(9) and 7.5(4) eb, respectively. The lifetime of the yrast 2 + state in 166 Dy is consistent with a quenching of nuclear quadrupole deformation at β ≈ 0.35 as the N = 104 mid-shell is approached.

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“…[9] and already used in Refs. [10,11,12]. The lifetime value was obtained by 2τ = ∆C-PRD(E f ,E d ), where ∆C is the centroid difference between the delayed (D) and antidelayed (AD) time distributions.…”

Section: The Experimentsmentioning

confidence: 99%

Core-proton coupled nature of the 11/2⁺ state in ¹³¹ Sb probed by lifetime measurements

Bottoni

Gamba²,

Gregorio³

et al. 2023

J. Phys.: Conf. Ser.

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The structure of the 11 / 2 1 + state in 131Sb was investigated at the LOHENGRIN spectrometer of Institut Laue-Langevin via neutron-induced fission of 235U and lifetime measurements, yielding T 1 / 2 = 3 ( 2 ) , at the edge of the sensitivity of the experimental method. This first result for the 11 / 2 1 + state half-life in neutron-rich Sb isotopes provides a quadrupole reduced transition probability to the ground state of B ( E 2 ) = 1.4 − 0.6 + 1.5 W.u., very close to the B ( E 2 ; 2 1 + → 0 1 + ) in 130Sn. Realistic shell-model calculations reproduce well both the experimental level scheme of 131Sb and the B ( E 2 ; 11 / 2 1 + → 7 / 2 1 + ) value, indicting a dominant 2 + ( 130 Sn ) ⊗ π g 7 / 2 core-proton coupled configuration for the 11 / 2 1 + state.

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Multi-quasiparticle sub-nanosecond isomers in 178W

Cited by 13 publications

References 21 publications

Spectroscopy and lifetime measurements in Te134,136,138 isotopes and implications for the nuclear structure beyond N=82
Häfner¹,
Lozeva²,
Naïdja³
et al. 2021
Phys. Rev. C
Self Cite
8
3
18
0
View full text Add to dashboard Cite

Spectroscopy and lifetime measurements in Te134,136,138 isotopes and implications for the nuclear structure beyond N=82
Häfner¹,
Lozeva²,
Naïdja³
et al. 2021
Phys. Rev. C
Self Cite
8
3
18
0
View full text Add to dashboard Cite

Half-life measurements in Dy164,166 using γ−γ fast-timing spectroscopy with the
Canavan¹,
Rudigier²,
Regan³
et al. 2020
Phys. Rev. C
Self Cite

Core-proton coupled nature of the 11/2⁺ state in ¹³¹ Sb probed by lifetime measurements

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Multi-quasiparticle sub-nanosecond isomers in 178W

Cited by 13 publications

References 21 publications

Spectroscopy and lifetime measurements in Te134,136,138 isotopes and implications for the nuclear structure beyond N=82Häfner1, Lozeva2, Naïdja3 et al. 2021Phys. Rev. CSelf Cite83180View full textAdd to dashboardCite

Spectroscopy and lifetime measurements in Te134,136,138 isotopes and implications for the nuclear structure beyond N=82Häfner1, Lozeva2, Naïdja3 et al. 2021Phys. Rev. CSelf Cite83180View full textAdd to dashboardCite

Half-life measurements in Dy164,166 using γ−γ fast-timing spectroscopy with the Canavan1, Rudigier2, Regan3 et al. 2020Phys. Rev. CSelf Cite

Core-proton coupled nature of the 11/2+ state in 131 Sb probed by lifetime measurements

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Spectroscopy and lifetime measurements in Te134,136,138 isotopes and implications for the nuclear structure beyond N=82
Häfner¹,
Lozeva²,
Naïdja³
et al. 2021
Phys. Rev. C
Self Cite
8
3
18
0
View full text Add to dashboard Cite

Spectroscopy and lifetime measurements in Te134,136,138 isotopes and implications for the nuclear structure beyond N=82
Häfner¹,
Lozeva²,
Naïdja³
et al. 2021
Phys. Rev. C
Self Cite
8
3
18
0
View full text Add to dashboard Cite

Half-life measurements in Dy164,166 using γ−γ fast-timing spectroscopy with the
Canavan¹,
Rudigier²,
Regan³
et al. 2020
Phys. Rev. C
Self Cite

Core-proton coupled nature of the 11/2⁺ state in ¹³¹ Sb probed by lifetime measurements