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21 results on '"Shand, C.M."'

1. Isomer spectroscopy of neutron-rich 168Tb103

Author

Gurgi, L.A., Regan, P.H., Söderström, P.-A., Watanabe, H., Walker, P.M., Podolyák, Zs., Nishimura, S., Berry, T.A., Doornenbal, P., Lorusso, G., Isobe, T., Baba, H., Xu, Z.Y., Sakurai, H., Sumikama, T., Catford, W.N., Bruce, A.M., Browne, F., Lane, G.J., Kondev, F.G., Odahara, A., Wu, J., Liu, H.L., Xu, F.R., Korkulu, Z., Lee, P., Liu, J.J., Phong, V.H., Yag, A., Zhang, G.X., Alharbi, T., Carroll, R.J., Chae, K.Y., Dombradi, Zs., Estrade, A., Fukuda, N., Griffin, C., Ideguchi, E., Inabe, N., Kanaoka, H., Kojouharov, I., Kubo, T., Kubono, S., Kurz, N., Kuti, I., Lalkovski, S., Lee, E.J., Lee, C.S., Lotay, G., Moon, C.-B., Nishizuka, I., Nita, C.R., Patel, Z., Roberts, O.J., Schaffner, H., Shand, C.M., Suzuki, H., Takeda, H., Terashima, S., Vajta, Zs., Yoshida, S., and Valiente-Dòbon, J.J.

Published
2017
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2. β-γ and isomeric decay spectroscopy of 168Dy

Author

Zhang G.X., Watanabe H., Kondev F.G., Lane G.J., Regan P.H., Söderström P.-A., Walker P.M., Kanaoka H., Korkulu Z., Lee P.S, Liu J.J, Nishimura S., Wu J., Yagi A., Ahn D.S., Alharbi T., Baba H., Browne F., Bruce A.M., Carroll R.J., Chae K.Y., Dombradi Zs., Doornenbal P., Estrade A., Fukuda N., Griffin C., Ideguchi E., Inabe N., Isobe T., Kanaya S., Kojouharov I., Kubo T., Kubono S., Kurz N., Kuti I., Lalkovski S., Lee C.S., Lee E.J., Lorusso G., Lotay G., Moon C.-B, Nishizuka I., Nita C.R., Odahara A., Patel Z., Phong V.H., Podolyák Zs., Roberts O.J., Sakurai H., Schaffner H., Shand C.M., Shimizu Y., Sumikama T., Suzuki H., Takeda H., Terashima S., Vajta Zs., Valiente-Dóbon J.J., and Xu Z.Y.

Subjects
Physics, QC1-999
Abstract

This contribution will report on the experimental work on the level structure of 168Dy. The experimental data have been taken as part of the EURICA decay spectroscopy campaign at RIBF, RIKEN in November 2014. In the experiment, a 238U primary beam is accelerated up to 345 MeV/u with an average intensity of 12 pnA. The nuclei of interest are produced by in-flight fission of 238U impinging on Be target with a thickness of 5 mm. The excited states of 168Dy have been populated through the decay from a newly identified isomeric state and via the β decay from 168Tb. In this contribution, scientific motivations, experimental procedure and some preliminary results for this study are presented.

Published
2018
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3. Fast-timing measurements in neutron-rich odd-mass zirconium isotopes using LaBr3:Ce detectors coupled with Gammasphere

Author

Gamba E.R., Lalkovski S., Rudigier M., Bruce A.M., Bottoni S., Carpenter M.P., Zhu S., Ayangeakaa A.D., Anderson J.T., Berry T.A., Burrows I., Carroll R.J., Copp P., Carmona Gallardo M., Cullen D.M., Daniel T., Greene J.P., Gurgi L.A., Hartley D.J., Ilieva R., Ilieva S., Janssens R.V.F., Kondev F.G., Kröll T., Lane G.J., Lauritsen T., Lazarus I., Lotay G., Fernández Martínez G., Podolyák Zs., Pucknell V., Reed M., Regan P.H., Rohrer J., Sethi J., Seweryniak D., Shand C.M., Simpson J., Smolen M., Stefanova E.A., Vedia V., and Yordanov O.

Subjects
Physics, QC1-999
Abstract

A fast-timing experiment was performed at the Argonne National Laboratory to measure the lifetimes of the lowest lying states of nuclei belonging to the deformed regions around mass number A≃110 and A≃150. These regions were populated via spontaneous fission of 252Cf and the gamma radiation following the decay of excited states in the fission fragments was measured using 51 Gammasphere detectors coupled with 25 LaBr3:Ce detectors. A brief description of the acquisition system and some preliminary results from the fast-timing analysis of the fission fragment 100Zr are presented. The lifetime value of τ = 840(65) ps was found for the 2+ state in 100Zr consistent within one standard deviation of the adopted value with 791 +26 -35ps. This is associated with a quadrupole deformation parameter of 0.36(2) which is within one standard deviation of the literature value of 0.3556+82 -57.

Published
2018
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4. Isomer-delayed gamma-ray spectroscopy of neutron-rich 166Tb

Author

Gurgi L.A., Regan P.H., Söderström P.-A., Watanabe H., Walker P.M., Podolyák Zs., Nishimura S., Berry T.A., Doornenbal P., Lorusso G., Isobe T., Baba H., Xu Z.Y., Sakurai H., Sumikama T., Catford W.N., Bruce A.M., Browne F., Lane G.J., Kondev F.G., Odahara A., Wu J., Liu H.L., Xu F.R., Korkulu Z., Lee P., Liu J.J., Phong V.H., Yagi A., Zhang G.X., Alharbi T., Carroll R.J., Chae K.Y., Dombradi Zs., Estrade A., Fukuda N., Griffin C., Ideguchi E., Inabe N., Kanaoka H., Kojouharov I., Kubo T., Kubono S., Kurz N., Kuti I., Lalkovski S., Lee E.J., Lee C.S., Lotay G., Moon C.B., Nishizuka I., Nita C.R., Patel Z., Roberts O.J., Schaffner H., Shand C.M., Suzuki H., Takeda H., Terashima S., Vajta Zs., Kanaya S., and Valiente-Dobòn J.J.

Subjects
Physics, QC1-999
Abstract

This short paper presents the identification of a metastable, isomeric-state decay in the neutron-rich odd-odd, prolate-deformed nucleus 166Tb. The nucleus of interest was formed using the in-flight fission of a 345 MeV per nucleon 238U primary beam at the RIBF facility, RIKEN, Japan. Gamma-ray transitions decaying from the observed isomeric states in 166Tb were identified using the EURICA gamma-ray spectrometer, positioned at the final focus of the BigRIPS fragments separator. The current work identifies a single discrete gamma-ray transition of energy 119 keV which de-excites an isomeric state in 166Tb with a measured half-life of 3.5(4) μs. The multipolarity assignment for this transition is an electric dipole and is made on the basis internal conversion and decay lifetime arguments. Possible two quasi-particle Nilsson configurations for the initial and final states which are linked by this transition in 166Tb are made on the basis of comparison with Blocked BCS Nilsson calculations, with the predicted ground state configuration for this nucleus arising from the coupling of the v(1-/2)[521] and π(3+/2) Nilsson orbitals.

Published
2017
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5. Validating (d,pγ) as a Surrogate for Neutron Capture

Author

Ratkiewicz A., Cizewski J.A., Pain S.D., Adekola A.S., Burke J.T., Casperson R.J., Fotiades N., McCleskey M., Burcher S., Shand C.M., Austin R.A.E., Baugher T., Carpenter M.P., Devlin M., Escher J.E., Hardy S., Hatarik R., Howard M.E., Hughes R.O., Jones K.L., Kozub R.L., Lister C.J., Manning B., O’Donnell J.M., Peters W.A., Ross T.J., Scielzo N.D., Seweryniak D., and Zhu S.

Subjects
Physics, QC1-999
Abstract

The r-process is responsible for creating roughly half of the elements heavier than iron. It has recently become understood that the rates at which neutron capture reactions proceed at late times in the r-process may dramatically affect the final abundance pattern. However, direct measurements of neutron capture reaction rates on exotic nuclei are exceptionally difficult, necessitating the development of indirect approaches such as the surrogate technique. The (d,pγ) reaction at low energies was identified as a promising surrogate for the (n,γ) reaction, as both reactions share many characteristics. We report on a program to validate (d,pγ) as a surrogate for (n,γ) using 95Mo as a target. The experimental campaign includes direct measurements of the γ-ray intensities from the decay of excited states populated in the 95Mo(n,γ) and 95Mo(d,pγ) reactions.

Published
2015
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6. Interplay of quasiparticle and vibrational excitations: First observation of isomeric states in Dy and Dy

Author

Zhang, G.X., Watanabe, H., Dracoulis, G.D., Kondev, F.G., Lane, G.J., Regan, P.H., Söderström, P.A., Walker, P.M., Yoshida, K., Kanaoka, H., Korkulu, Z., Lee, P.S., Liu, J.J., Nishimura, S., Wu, J., Yagi, A., Ahn, D.S., Alharbi, T., Baba, H., Browne, F., Bruce, A.M., Carpenter, M.P., Carroll, R.J., Chae, K.Y., Chiara, C.J., Dombradi, Zs., Doornenbal, P., Estrade, A., Fukuda, N., Griffin, C., Ideguchi, E., Inabe, N., Isobe, T., Kanaya, S., Kojouharov, I., Kubo, T., Kubono, S., Kurz, N., Kuti, I., Lalkovski, S., Lauritsen, T., Lee, C.S., Lee, E.J., Lister, C.J., Lorusso, G., Lotay, G., McCutchan, E.A., Moon, C.B., Nishizuka, I., Nita, C.R., Odahara, A., Patel, Z., Phong, V.H., Podolyák, Zs., Roberts, O.J., Sakurai, H., Schaffner, H., Seweryniak, D., Shand, C.M., Shimizu, Y., Sumikama, T., Suzuki, H., Takeda, H., Terashima, S., Vajta, Zs., Valiente-Dóbon, J.J., Xu, Z.Y., and Zhu, S.

Abstract

The neutron-rich dysprosium isotopes $^{168}$Dy$_{102}$ and $^{169}$Dy$_{103}$ have been investigated using the EURICA γ-ray spectrometer, following production via in-flight fission of a high-intensity uranium beam in conjunction with isotope separation through the BigRIPS separator at RIBF in RIKEN Nishina Center. For $^{168}$Dy, a previously unreported isomer with a half-life of 0.57(7) μs has been identified at an excitation energy of 1378 keV, and its presence affirmed independently using γ-γ-γ coincidence data taken with Gammasphere via two-proton transfer from an enriched $^{170}$Er target performed at Argonne National Laboratory. This isomer is assigned Jπ=Kπ=(4−) based on the measured transition strengths, decay patterns, and the energy systematics for two-quasiparticle states in N=102 isotones. The underlying mechanism of two-quasiparticle excitations in the doubly midshell region is discussed in comparison with the deformed QRPA and multi-quasiparticle calculations. In $^{169}$Dy, the B(E2) value for the transition de-exciting the previously unreported Kπ=(1/2−) isomeric state at 166 keV to the Kπ=(5/2−) ground state is approximately two orders of magnitude larger than the E2 strength for the corresponding isomeric-decay transition in the N=103 isotone $^{173}$Yb, suggesting the presence of a significant γ-vibrational admixture with a dominant neutron one-quasiparticle component in the isomeric state.

Published
2019

7. Interplay of quasiparticle and vibrational excitations: First observation of isomeric states in ¹⁶⁸Dy and ¹⁶⁹Dy

Author

Zhang, G.X., Watanabe, H., Dracoulis, G.D., Kondev, F.G., Lane, G.J., Regan, P.H., Söderström, P.-A., Walker, P.M., Yoshida, K., Kanaoka, H., Korkulu, Z., Lee, P.S., Liu, J.J., Nishimura, S., Wu, J., Yagi, A., Ahn, D.S., Alharbi, T., Baba, H., Browne, F., Bruce, A.M., Carpenter, M.P., Carroll, R.J., Chae, K.Y., Chiara, C.J., Dombradi, Zs., Doornenbal, P., Estrade, A., Fukuda, N., Griffin, C., Ideguchi, E., Inabe, N., Isobe, T., Kanaya, S., Kojouharov, I., Kubo, T., Kubono, S., Kurz, N., Kuti, I., Lalkovski, S., Lauritsen, T., Lee, C.S., Lee, E.J., Lister, C.J., Lorusso, G., Lotay, G., McCutchan, E.A., Moon, C.-B., Nishizuka, I., Nita, C.R., Odahara, A., Patel, Z., Phong, V.H., Podolyak, Zs., Roberts, O.J., Sakurai, H., Schaffner, H., Seweryniak, D., Shand, C.M., Shimizu, Y., Sumikama, T., Suzuki, H., Takeda, H., Terashima, S., Vajta, Zs., Valiente-Dóbon, J.J., Xu, Z.Y., and Zhu, S.

Abstract

The neutron-rich dysprosium isotopes ¹⁶⁸Dy₁₀₂ and ¹⁶⁹Dy₁₀₃ have been investigated using the EURICA γ-ray spectrometer, following production via in-flight fission of a high-intensity uranium beam in conjunction with isotope separation through the BigRIPS separator at RIBF in RIKEN Nishina Center. For ¹⁶⁸Dy, a previously unreported isomer with a half-life of 0.57(7) μs has been identified at an excitation energy of 1378 keV, and its presence affirmed independently using γ-γ-γ coincidence data taken with Gammasphere via two-proton transfer from an enriched ¹⁷⁰Er target performed at Argonne National Laboratory. This isomer is assigned Jπ = Kπ = (4⁻) based on the measured transition strengths, decay patterns, and the energy systematics for two-quasiparticle states in N = 102 isotones. The underlying mechanism of two-quasiparticle excitations in the doubly midshell region is discussed in comparison with the deformed QRPA and multi-quasiparticle calculations. In ¹⁶⁹Dy, the B(E2) value for the transition de-exciting the previously unreported Kπ = (1/2⁻) isomeric state at 166 keV to the Kπ = (5/2⁻) ground state is approximately two orders of magnitude larger than the E2 strength for the corresponding isomeric-decay transition in the N = 103 isotone ¹⁷³Yb, suggesting the presence of a significant γ-vibrational admixture with a dominant neutron one-quasiparticle component in the isomeric state.

Published
2019

8. Fast-timing measurements in the ground-state band of Pd 114

Author

Rohrer, J., Regan, P.H., Ayangeakaa, A.D., Gurgi, L.A., Berry, T.A., Sethi, J., Carpenter, M.P., Bruce, A.M., Carmona Gallardo, M., Vedia, V., Lauritsen, T., Greene, J.P., Shand, C.M., Anderson, J.T., Rudigier, M., Ilieva, S., Copp, P., Lazarus, I., Smoleń, M., Simpson, J., Kondev, F.G., Pucknell, V., Gamba, E.R., Kröll, T., Yordanov, O., Niţǎ, C.R., Stefanova, E.A., Reed, M., Lalkovski, S., Fernández Martínez, G., Seweryniak, D., Ilieva, R., Hartley, D.J., Daniel, T., Lotay, G., Bottoni, S., Cullen, D.M., Burrows, I., Zhu, S., Lane, G.J., Carroll, R.J., and Podolyák, Z.

Abstract

Using a hybrid Gammasphere array coupled to 25 LaBr3(Ce) detectors, the lifetimes of the first three levels of the yrast band in Pd114, populated via Cf252 decay, have been measured. The measured lifetimes are τ2+=103(10)ps, τ4+=22(13)ps, and τ6+≤10ps for the 21+, 41+, and 61+ levels, respectively. Palladium-114 was predicted to be the most deformed isotope of its isotopic chain, and spectroscopic studies have suggested it might also be a candidate nucleus for low-spin stable triaxiality. From the lifetimes measured in this work, reduced transition probabilities B(E2;J→J-2) are calculated and compared with interacting boson model, projected shell model, and collective model calculations from the literature. The experimental ratio RB(E2)=B(E2;41+→21+)/B(E2;21+→01+)=0.80(42) is measured for the first time in Pd114 and compared with the known values RB(E2) in the palladium isotopic chain: the systematics suggest that, for N=68, a transition from γ-unstable to a more rigid γ-deformed nuclear shape occurs.

Published
2019
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9. Interplay of quasiparticle and vibrational excitations: First observation of isomeric states in 168Dy and 169Dy

Author

Zhang, G.X., primary, Watanabe, H., additional, Dracoulis, G.D., additional, Kondev, F.G., additional, Lane, G.J., additional, Regan, P.H., additional, Söderström, P.-A., additional, Walker, P.M., additional, Yoshida, K., additional, Kanaoka, H., additional, Korkulu, Z., additional, Lee, P.S., additional, Liu, J.J., additional, Nishimura, S., additional, Wu, J., additional, Yagi, A., additional, Ahn, D.S., additional, Alharbi, T., additional, Baba, H., additional, Browne, F., additional, Bruce, A.M., additional, Carpenter, M.P., additional, Carroll, R.J., additional, Chae, K.Y., additional, Chiara, C.J., additional, Dombradi, Zs., additional, Doornenbal, P., additional, Estrade, A., additional, Fukuda, N., additional, Griffin, C., additional, Ideguchi, E., additional, Inabe, N., additional, Isobe, T., additional, Kanaya, S., additional, Kojouharov, I., additional, Kubo, T., additional, Kubono, S., additional, Kurz, N., additional, Kuti, I., additional, Lalkovski, S., additional, Lauritsen, T., additional, Lee, C.S., additional, Lee, E.J., additional, Lister, C.J., additional, Lorusso, G., additional, Lotay, G., additional, McCutchan, E.A., additional, Moon, C.-B., additional, Nishizuka, I., additional, Nita, C.R., additional, Odahara, A., additional, Patel, Z., additional, Phong, V.H., additional, Podolyák, Zs., additional, Roberts, O.J., additional, Sakurai, H., additional, Schaffner, H., additional, Seweryniak, D., additional, Shand, C.M., additional, Shimizu, Y., additional, Sumikama, T., additional, Suzuki, H., additional, Takeda, H., additional, Terashima, S., additional, Vajta, Zs., additional, Valiente-Dóbon, J.J., additional, Xu, Z.Y., additional, and Zhu, S., additional

Published
2019
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10. Investigation of the Δn = 0 selection rule in Gamow-Teller transitions: The β-decay of 207Hg

Author

Berry, T.A., primary, Podolyák, Zs., additional, Carroll, R.J., additional, Lică, R., additional, Grawe, H., additional, Timofeyuk, N.K., additional, Alexander, T., additional, Andreyev, A.N., additional, Ansari, S., additional, Borge, M.J.G., additional, Creswell, J., additional, Fahlander, C., additional, Fraile, L.M., additional, Fynbo, H.O.U., additional, Gelletly, W., additional, Gerst, R.-B., additional, Górska, M., additional, Gredley, A., additional, Greenlees, P., additional, Harkness-Brennan, L.J., additional, Huyse, M., additional, Judge, S.M., additional, Judson, D.S., additional, Konki, J., additional, Kurcewicz, J., additional, Kuti, I., additional, Lalkovski, S., additional, Lazarus, I., additional, Lund, M., additional, Madurga, M., additional, Mărginean, N., additional, Mărginean, R., additional, Marroquin, I., additional, Mihai, C., additional, Mihai, R.E., additional, Nácher, E., additional, Nae, S., additional, Negret, A., additional, Niţă, C., additional, Page, R.D., additional, Pascu, S., additional, Patel, Z., additional, Perea, A., additional, Pucknell, V., additional, Rahkila, P., additional, Rapisarda, E., additional, Regan, P.H., additional, Rotaru, F., additional, Shand, C.M., additional, Simpson, E.C., additional, Sotty, Ch., additional, Stegemann, S., additional, Stora, T., additional, Tengblad, O., additional, Turturica, A., additional, Van Duppen, P., additional, Vedia, V., additional, Wadsworth, R., additional, Walker, P.M., additional, Warr, N., additional, Wearing, F., additional, and De Witte, H., additional

Published
2019
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11. Shell evolution beyond N = 50 and Z = 28 : spectroscopy of 81,82,83,84Zn

Author

Shand, C.M.

Abstract

The exotic region of the nuclear chart around the doubly-magic 78Ni (Z = 28, N = 50) nucleus presents an excellent testing ground for our understanding of nuclear structure. The region around N = 50 plays an important role in the astrophysical rapid neutron- capture (r) process. The robustness of the N = 50 conventional magic number could affect current knowledge of nuclear abundances. Measurements of 2+ and 4+ states offer one of the first indications of shell structure and evolution. Measurements of low-lying states in 81,82,83,84Zn were performed. 82,84Zn are the first two even-even nuclei beyond 78Ni, thus are an important test for the strength of the doubly-magic 78Ni core. The Zn nuclei were measured in the first and second experimental campaigns of the SEASTAR (Shell Evolution and Search for Two-plus energies At the RIBF) project conducted at the RIBF, RIKEN, Japan. In-flight fragmentation-fission beams were produced using a 238U primary beam of 345 MeV/nucleon. The BigRIPS spectrometer was used to identify and select the secondary beams impinged onto a liquid hydrogen target. γ rays were detected using DALI2, an array of 186 NaI detectors surrounding the target. The MINOS system provided vertex reconstruction by tracking the outgoing protons in (p, 2p) proton knockout reactions. Reaction products were identified using the ZeroDegree spectrometer. The 2+ and 4+ states in 82Zn were measured, the 4+1 was observed for the first time in this work along with two additional states. The 2+ and 4+ in 84Zn were measured for the first time, extending the known Zn systematics to N = 54. Two new transitions were observed and assigned within 81Zn, while two tentative transitions were seen in 83Zn. Two state-of-the-art shell model calculations were performed: Ni78-II utilised an inert 78Ni core with a large valence space, while the MCSM calculation allowed core-breaking configurations with a limited neutron valence space. Comparisons of these calculations to the results and region systematics have revealed that the breaking of the 78Ni core provides a significant contribution to low-lying states in the direct vicinity of 78Ni. However, the inclusion of core-breaking configurations also needs to be met with an ample model space to accommodate near future measurements of nuclei in the region. Interactions need to be developed to enable such accommodations in current shell-model calculations.

Published
2017

12. Role of the \Delta resonance in the population of a four-nucleon state in the 56Fe \rightarrow 54Fe reaction at relativistic energies

Author

Cullen, David, Podolyak, Zs., Shand, C.M., Lalovic, N., Gerl, J., Rudolph, D., Alexander, T., Boutachkov, P., Cortes, M.L., Gorska, M., Kojouharov, I., and Kurz, N.

Subjects
Nuclear Theory, Nuclear Experiment
Abstract

The 54Fe nucleus was populated from a 56Fe beam impinging on a Be target with an energy of E/A=500 M eV. The internal decay via \gamma-ray emission of the 10+ metastable state was observed. As the structure of this isomeric state has to involve at least four unpaired nucleons, it cannot be populated in a simple two-neutron removal reaction from the 56Fe ground state. The isomeric state was produced in the low-momentum/energy tail of the parallel momentum/energy distribution of 54Fe, suggesting that it was populated via the decay of the \Delta ^0 resonance into a proton. This process allows the population of four-nucleon states, such as the observed isomer. Therefore, it is concluded that the observation of this 10+ metastable state in 54Fe is a consequence of the quark structure of the nucleons.

Published
2016
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13. Fast-timing Measurements in $^{100}$Zr Using LaBr$_{3}$(Ce) Detectors Coupled with Gammasphere

Author

Gamba, E.R., primary, Bruce, A.M., additional, Rudigier, M., additional, Lalkovski, S., additional, Bottoni, S., additional, Carpenter, M.P., additional, Zhu, S., additional, Ayangeakaa, A.D., additional, Anderson, J.T., additional, Berry, T.A., additional, Burrows, I., additional, Carrol, R.J., additional, Copp, P., additional, Carmona Gallardo, M., additional, Cullen, D.M., additional, Daniel, T., additional, Fernández Martínez, G., additional, Greene, J.P., additional, Gurgi, L.A., additional, Hartley, D.J., additional, Ilieva, R., additional, Ilieva, S., additional, Janssens, R.V.F., additional, Kondev, F.G., additional, Kröll, T., additional, Lane, G.J., additional, Lauritsen, T., additional, Lazarus, I., additional, Lotay, G., additional, Niţă, C.R., additional, Podolyák, Zs., additional, Pucknell, V., additional, Reed, M., additional, Regan, P.H., additional, Rohrer, J., additional, Sethi, J., additional, Seweryniak, D., additional, Shand, C.M., additional, Simpson, J., additional, Smoleń, M., additional, Vedia, V., additional, Stefanova, E.A., additional, and Yordanov, O., additional

Published
2018
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14. Shell evolution beyond Z = 28 and N = 50: Spectroscopy of 81,82,83,84 Zn

Author

Shand, C.M., primary, Podolyák, Zs., additional, Górska, M., additional, Doornenbal, P., additional, Obertelli, A., additional, Nowacki, F., additional, Otsuka, T., additional, Sieja, K., additional, Tostevin, J.A., additional, Tsunoda, Y., additional, Authelet, G., additional, Baba, H., additional, Calvet, D., additional, Château, A., additional, Chen, S., additional, Corsi, A., additional, Delbart, A., additional, Gheller, J.M., additional, Giganon, A., additional, Gillibert, A., additional, Isobe, T., additional, Lapoux, V., additional, Matsushita, M., additional, Momiyama, S., additional, Motobayashi, T., additional, Niikura, M., additional, Otsu, H., additional, Paul, N., additional, Péron, C., additional, Peyaud, A., additional, Pollacco, E.C., additional, Roussé, J.-Y., additional, Sakurai, H., additional, Santamaria, C., additional, Sasano, M., additional, Shiga, Y., additional, Steppenbeck, D., additional, Takeuchi, S., additional, Taniuchi, R., additional, Uesaka, T., additional, Wang, H., additional, Yoneda, K., additional, Ando, T., additional, Arici, T., additional, Blazhev, A., additional, Browne, F., additional, Bruce, A.M., additional, Carroll, R.J., additional, Chung, L.X., additional, Cortés, M.L., additional, Dewald, M., additional, Ding, B., additional, Dombrádi, Zs., additional, Flavigny, F., additional, Franchoo, S., additional, Giacoppo, F., additional, Gottardo, A., additional, Hadyńska-Klęk, K., additional, Jungclaus, A., additional, Korkulu, Z., additional, Koyama, S., additional, Kubota, Y., additional, Lee, J., additional, Lettmann, M., additional, Linh, B.D., additional, Liu, J., additional, Liu, Z., additional, Lizarazo, C., additional, Louchart, C., additional, Lozeva, R., additional, Matsui, K., additional, Miyazaki, T., additional, Moschner, K., additional, Nagamine, M., additional, Nakatsuka, N., additional, Nishimura, S., additional, Nita, C.R., additional, Nobs, C.R., additional, Olivier, L., additional, Ota, S., additional, Orlandi, R., additional, Patel, Z., additional, Regan, P.H., additional, Rudigier, M., additional, Şahin, E., additional, Saito, T., additional, Söderström, P.-A., additional, Stefan, I., additional, Sumikama, T., additional, Suzuki, D., additional, Vajta, Zs., additional, Vaquero, V., additional, Werner, V., additional, Wimmer, K., additional, Wu, J., additional, and Xu, Z.Y., additional

Published
2017
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15. Octupole transitions in the 208Pb region

Author

Hoffman, C.R., Fornal, B., Deo, A.Y., Shand, C.M., Regan, P.H., Reed, M.W., Podolyák, Z., Brown, B.A., Kondev, F.G., Cieplicka, N., Chiara, C.J., Seweryniak, D., Carpenter, M.P., Bowry, M., Lotay, G., Lauritsen, T., Wilson, E., Walker, P.M., Lane, G.J., Szpak, B., Kempley, R.S., Dracoulis, G.D., Janssens, R.V.F., Bunce, M., Zhu, S., Triguero, C.R., and Grawe, H.

Abstract

The 208Pb region is characterised by the existence of collective octupole states. Here we populated such states in 208Pb + 208Pb deep-inelastic reactions. γ-ray angular distribution measurements were used to infer the octupole character of several E3 transitions. The octupole character of the 2318 keV 17- 14+ in 208Pb, 2485 keV 19/2- 13/2+ in 207Pb, 2419 keV 15/2- 9/2+ in 209Pb and 2465 keV 17/2+ 11/2- in 207Tl transitions was demonstrated for the first time. In addition, shell model calculations were performed using two different sets of two-body matrix elements. Their predictions were compared with emphasis on collective octupole states.

Published
2015
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16. Isomer Spectroscopy of Neutron-rich $^{165,167}$Tb

Author

Gurgi, L.A., primary, Regan, P.H., additional, Söderström, P.-A., additional, Watanabe, H., additional, Walker, P.M., additional, Podolyák, Zs., additional, Nishimura, S., additional, Berry, T.A., additional, Doornenbal, P., additional, Lorusso, G., additional, Isobe, T., additional, Baba, H., additional, Xu, Z.Y., additional, Sakurai, H., additional, Sumikama, T., additional, Catford, W.N., additional, Bruce, A.M., additional, Browne, F., additional, Lane, G.J., additional, Kondev, F.G., additional, Odahara, A., additional, Wu, J., additional, Liu, H.L., additional, Xu, F.R., additional, Korkulu, Z., additional, Lee, P., additional, Liu, J.J., additional, Phong, V.H., additional, Yagi, A., additional, Zhang, G.X., additional, Alharbi, T., additional, Carroll, R.J., additional, Chae, K.Y., additional, Dombradi, Zs., additional, Estrade, A., additional, Fukuda, N., additional, Griffin, C., additional, Ideguchi, E., additional, Inabe, N., additional, Kanaoka, H., additional, Kojouharov, I., additional, Kubo, T., additional, Kubono, S., additional, Kurz, N., additional, Kuti, I., additional, Lalkovski, S., additional, Lee, E.J., additional, Lee, C.S., additional, Lotay, G., additional, Moon, C.B., additional, Nishizuka, I., additional, Nita, C.R., additional, Patel, Z., additional, Roberts, O.J., additional, Schaffner, H., additional, Shand, C.M., additional, Suzuki, H., additional, Takeda, H., additional, Terashima, S., additional, Vajta, Zs., additional, Kanaya, S., additional, and Valiente-Dobón, J.J., additional

Published
2017
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17. Fast Timing Measurement Using an LaBr$_3$(Ce) Scintillator Detector Array Coupled with Gammasphere

Author

Rudigier, M., primary, Lalkovski, S., additional, Gamba, E.R., additional, Bruce, A.M., additional, Podolyak, Zs., additional, Regan, P.H., additional, Carpenter, M., additional, Zhu, S., additional, Ayangeakaa, A.D., additional, Anderson, J.T., additional, Berry, T., additional, Bottoni, S., additional, Burrows, I., additional, Carroll, R., additional, Copp, P., additional, Cullen, D., additional, Daniel, T., additional, Fraile, L., additional, Carmona Gallardo, M., additional, Grant, A., additional, Greene, J.P., additional, Guegi, L.A., additional, Hartley, D., additional, Ilieva, R., additional, Ilieva, S., additional, Janssens, R.V.F., additional, Kondev, F.G., additional, Kröll, T., additional, Lane, G.J., additional, Lauritsen, T., additional, Lazarus, I., additional, Lotay, G., additional, Fernandez Martinez, G., additional, Pucknell, V., additional, Reed, M., additional, Rohrer, J., additional, Sethi, J., additional, Seweryniak, D., additional, Shand, C.M., additional, Simpson, J., additional, Smolen, M., additional, Stefanova, E., additional, Vedia, V., additional, and Yordanov, O., additional

Published
2017
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18. K-mixing in the doubly mid-shell nuclide 170Dy and the role of vibrational degeneracy

Author

Söderström, P.-A., primary, Walker, P.M., additional, Wu, J., additional, Liu, H.L., additional, Regan, P.H., additional, Watanabe, H., additional, Doornenbal, P., additional, Korkulu, Z., additional, Lee, P., additional, Liu, J.J., additional, Lorusso, G., additional, Nishimura, S., additional, Phong, V.H., additional, Sumikama, T., additional, Xu, F.R., additional, Yagi, A., additional, Zhang, G.X., additional, Ahn, D.S., additional, Alharbi, T., additional, Baba, H., additional, Browne, F., additional, Bruce, A.M., additional, Carroll, R.J., additional, Chae, K.Y., additional, Dombradi, Zs., additional, Estrade, A., additional, Fukuda, N., additional, Griffin, C.J., additional, Ideguchi, E., additional, Inabe, N., additional, Isobe, T., additional, Kanaoka, H., additional, Kanaya, S., additional, Kojouharov, I., additional, Kondev, F.G., additional, Kubo, T., additional, Kubono, S., additional, Kurz, N., additional, Kuti, I., additional, Lalkovski, S., additional, Lane, G.J., additional, Lee, E.J., additional, Lee, C.S., additional, Lotay, G., additional, Moon, C.-B., additional, Nishizuka, I., additional, Niţă, C.R., additional, Odahara, A., additional, Patel, Z., additional, Podolyák, Zs., additional, Roberts, O.J., additional, Sakurai, H., additional, Schaffner, H., additional, Shand, C.M., additional, Suzuki, H., additional, Takeda, H., additional, Terashima, S., additional, Vajta, Zs., additional, Valiente-Dòbon, J.J., additional, and Xu, Z.Y., additional

Published
2016
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19. Long-lived K isomer and enhanced γ vibration in the neutron-rich nucleus 172Dy: Collectivity beyond double midshell

Author

Watanabe, H., primary, Zhang, G.X., additional, Yoshida, K., additional, Walker, P.M., additional, Liu, J.J., additional, Wu, J., additional, Regan, P.H., additional, Söderström, P.-A., additional, Kanaoka, H., additional, Korkulu, Z., additional, Lee, P.S., additional, Nishimura, S., additional, Yagi, A., additional, Ahn, D.S., additional, Alharbi, T., additional, Baba, H., additional, Browne, F., additional, Bruce, A.M., additional, Carroll, R.J., additional, Chae, K.Y., additional, Dombradi, Zs., additional, Doornenbal, P., additional, Estrade, A., additional, Fukuda, N., additional, Griffin, C., additional, Ideguchi, E., additional, Inabe, N., additional, Isobe, T., additional, Kanaya, S., additional, Kojouharov, I., additional, Kondev, F.G., additional, Kubo, T., additional, Kubono, S., additional, Kurz, N., additional, Kuti, I., additional, Lalkovski, S., additional, Lane, G.J., additional, Lee, C.S., additional, Lee, E.J., additional, Lorusso, G., additional, Lotay, G., additional, Moon, C.-B., additional, Nishizuka, I., additional, Nita, C.R., additional, Odahara, A., additional, Patel, Z., additional, Phong, V.H., additional, Podolyák, Zs., additional, Roberts, O.J., additional, Sakurai, H., additional, Schaffner, H., additional, Shand, C.M., additional, Shimizu, Y., additional, Sumikama, T., additional, Suzuki, H., additional, Takeda, H., additional, Terashima, S., additional, Vajta, Zs., additional, Valiente-Dóbon, J.J., additional, and Xu, Z.Y., additional

Published
2016
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20. Core excitations across the neutron shell gap in 207Tl

Author

Wilson, E., primary, Podolyák, Zs., additional, Grawe, H., additional, Brown, B.A., additional, Chiara, C.J., additional, Zhu, S., additional, Fornal, B., additional, Janssens, R.V.F., additional, Shand, C.M., additional, Bowry, M., additional, Bunce, M., additional, Carpenter, M.P., additional, Cieplicka-Oryńczak, N., additional, Deo, A.Y., additional, Dracoulis, G.D., additional, Hoffman, C.R., additional, Kempley, R.S., additional, Kondev, F.G., additional, Lane, G.J., additional, Lauritsen, T., additional, Lotay, G., additional, Reed, M.W., additional, Regan, P.H., additional, Rodríguez Triguero, C., additional, Seweryniak, D., additional, Szpak, B., additional, and Walker, P.M., additional

Published
2015
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21. Structure of $^{207}$Pb Populated in $^{208}$Pb + $^{208}$Pb Deep-inelastic Collisions

Author

Shand, C.M., primary, Wilson, E., additional, Podolyák, Zs., additional, Grawe, H., additional, Brown, B.A., additional, Fornal, B., additional, Janssens, R.V.F., additional, Bowry, M., additional, Bunce, M., additional, Carpenter, M.P., additional, Carroll, R.J., additional, Chiara, C.J., additional, Cieplicka-Oryńczak, N., additional, Deo, A.Y., additional, Dracoulis, G.D., additional, Hoffman, C.R., additional, Kempley, R.S., additional, Kondev, F.G., additional, Lane, G.J., additional, Lauritsen, T., additional, Lotay, G., additional, Reed, M.W., additional, Regan, P.H., additional, Rodriguez-Triguero, C., additional, Seweryniak, D., additional, Szpak, B., additional, Walker, P.M., additional, and Zhu, S., additional

Published
2015
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