γ -ray spectroscopy of low-lying yrast and non-yrast states in neutron-rich Kr 94,95,96

R. B. Gerst; A. Blazhev; K. Moschner; P. Doornenbal; A. Obertelli; K. Nomura; J. P. Ebran; S. Hilaire; J. Libert; G. Authelet; H. Baba; D. Calvet; F. Château; S. Chen; A. Corsi; A. Delbart; J. M. Gheller; A. Giganon; A. Gillibert; V. Lapoux; T. Motobayashi; M. Niikura; N. Paul; J. Y. Roussé; H. Sakurai; C. Santamaria; D. Steppenbeck; R. Taniuchi; T. Uesaka; T. Ando; T. Arici; F. Browne; A. M. Bruce; R. Caroll; L. X. Chung; M. L. Cortés; M. Dewald; B. Ding; F. Flavigny; S. Franchoo; M. Górska; A. Gottardo; J. Jolie; A. Jungclaus; J. Lee; M. Lettmann; B. D. Linh; J. Liu; C. Lizarazo; S. Momiyama; S. Nagamine; N. Nakatsuka; C. R. Nita; C. Nobs; L. Olivier; R. Orlandi; Z. Patel; Zs Podolyák; M. Rudigier; T. Saito; C. Shand; P. A. Söderström; I. Stefan; V. Vaquero; V. Werner; K. Wimmer; Z. Xu

doi:10.1103/PhysRevC.105.024302

γ -ray spectroscopy of low-lying yrast and non-yrast states in neutron-rich Kr 94,95,96

R. B. Gerst, A. Blazhev, K. Moschner, P. Doornenbal, A. Obertelli, K. Nomura, J. P. Ebran, S. Hilaire, J. Libert, G. Authelet, H. Baba, D. Calvet, F. Château, S. Chen, A. Corsi, A. Delbart, J. M. Gheller, A. Giganon, A. Gillibert, V. LapouxT. Motobayashi, M. Niikura, N. Paul, J. Y. Roussé, H. Sakurai, C. Santamaria, D. Steppenbeck, R. Taniuchi, T. Uesaka, T. Ando, T. Arici, F. Browne, A. M. Bruce, R. Caroll, L. X. Chung, M. L. Cortés, M. Dewald, B. Ding, F. Flavigny, S. Franchoo, M. Górska, A. Gottardo, J. Jolie, A. Jungclaus, J. Lee, M. Lettmann, B. D. Linh, J. Liu, C. Lizarazo, S. Momiyama, S. Nagamine, N. Nakatsuka, C. R. Nita, C. Nobs, L. Olivier, R. Orlandi, Z. Patel, Zs Podolyák, M. Rudigier, T. Saito, C. Shand, P. A. Söderström, I. Stefan, V. Vaquero, V. Werner, K. Wimmer, Z. Xu

University of Brighton

Research output: Contribution to journal › Article › peer-review

Abstract

We report on γ-ray spectroscopy of low-lying excited states in the neutron-rich Kr94,95,96 isotopes measured as part of the "Shell Evolution And Search for Two-plus energies At RIBF"(SEASTAR) campaign at the RIKEN Radioactive Isotope Beam Factory. Excited yrast and non-yrast states were observed, and half-lives extracted via geant4 simulations. In Kr94,96 candidates for the 31- state were identified. For Kr95, the prompt SEASTAR data were combined with delayed spectroscopic data measured with the EURICA array to observe transitions on top of the known (7/2)+ isomer at a level energy of 195.5(3) keV. The comparison of the new experimental results with five-dimensional collective Hamiltonian (5DCH) and mapped interacting boson model (IBM) calculations, both using the Gogny D1M interaction, could suggest oblate-prolate shape coexistence already in Kr96.

Original language	English
Article number	024302
Number of pages	11
Journal	Physical Review C
Volume	105
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevC.105.024302
Publication status	Published - 3 Feb 2022

Bibliographical note

Funding Information:
This work is supported by the Deutsche Forschungsgemeinschaft (DFG—German Research Foundation) under Grant No. BL 1513/1-1 and by the BMBF under Grants No. 05P15PKFNA, No. 05P19PKFNA, No. 05P15RDFN1, No. 05P19RDFN1, and No. 05P21RDFN1. We thank the RIKEN Nishina Centre accelerator staff and the BigRIPS team for providing the stable and high-intensity uranium beam and secondary beams, and the STFC (UK). J.P.E. thanks D. Regnier for useful discussions. The work of K. Nomura was supported by the Tenure Track Pilot Programme of the Croatian Science Foundation, the École Polytechnique Fédérale de Lausanne, and Project No. TTP-2018-07-3554, Exotic Nuclear Structure and Dynamics, with funds of the Croatian-Swiss Research Programme. B.D. and Z.L. were supported by the National Natural Science Foundation of China (Grants No. 12135004, No. 11635003, and No. 11961141004). R.T. was supported by JSPS Grant-in-Aid for JSPS Research Fellows JP14J08718.

Publisher Copyright:
© 2022 American Physical Society.

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Gerst, R. B., Blazhev, A., Moschner, K., Doornenbal, P., Obertelli, A., Nomura, K., Ebran, J. P., Hilaire, S., Libert, J., Authelet, G., Baba, H., Calvet, D., Château, F., Chen, S., Corsi, A., Delbart, A., Gheller, J. M., Giganon, A., Gillibert, A., ... Xu, Z. (2022). γ -ray spectroscopy of low-lying yrast and non-yrast states in neutron-rich Kr 94,95,96. Physical Review C, 105(2), Article 024302. https://doi.org/10.1103/PhysRevC.105.024302

@article{1408601d031e4b468a8d704aa29a363c,

title = "γ -ray spectroscopy of low-lying yrast and non-yrast states in neutron-rich Kr 94,95,96",

abstract = "We report on γ-ray spectroscopy of low-lying excited states in the neutron-rich Kr94,95,96 isotopes measured as part of the {"}Shell Evolution And Search for Two-plus energies At RIBF{"}(SEASTAR) campaign at the RIKEN Radioactive Isotope Beam Factory. Excited yrast and non-yrast states were observed, and half-lives extracted via geant4 simulations. In Kr94,96 candidates for the 31- state were identified. For Kr95, the prompt SEASTAR data were combined with delayed spectroscopic data measured with the EURICA array to observe transitions on top of the known (7/2)+ isomer at a level energy of 195.5(3) keV. The comparison of the new experimental results with five-dimensional collective Hamiltonian (5DCH) and mapped interacting boson model (IBM) calculations, both using the Gogny D1M interaction, could suggest oblate-prolate shape coexistence already in Kr96. ",

author = "Gerst, {R. B.} and A. Blazhev and K. Moschner and P. Doornenbal and A. Obertelli and K. Nomura and Ebran, {J. P.} and S. Hilaire and J. Libert and G. Authelet and H. Baba and D. Calvet and F. Ch{\^a}teau and S. Chen and A. Corsi and A. Delbart and Gheller, {J. M.} and A. Giganon and A. Gillibert and V. Lapoux and T. Motobayashi and M. Niikura and N. Paul and Rouss{\'e}, {J. Y.} and H. Sakurai and C. Santamaria and D. Steppenbeck and R. Taniuchi and T. Uesaka and T. Ando and T. Arici and F. Browne and Bruce, {A. M.} and R. Caroll and Chung, {L. X.} and Cort{\'e}s, {M. L.} and M. Dewald and B. Ding and F. Flavigny and S. Franchoo and M. G{\'o}rska and A. Gottardo and J. Jolie and A. Jungclaus and J. Lee and M. Lettmann and Linh, {B. D.} and J. Liu and C. Lizarazo and S. Momiyama and S. Nagamine and N. Nakatsuka and Nita, {C. R.} and C. Nobs and L. Olivier and R. Orlandi and Z. Patel and Zs Podoly{\'a}k and M. Rudigier and T. Saito and C. Shand and S{\"o}derstr{\"o}m, {P. A.} and I. Stefan and V. Vaquero and V. Werner and K. Wimmer and Z. Xu",

note = "Funding Information: This work is supported by the Deutsche Forschungsgemeinschaft (DFG—German Research Foundation) under Grant No. BL 1513/1-1 and by the BMBF under Grants No. 05P15PKFNA, No. 05P19PKFNA, No. 05P15RDFN1, No. 05P19RDFN1, and No. 05P21RDFN1. We thank the RIKEN Nishina Centre accelerator staff and the BigRIPS team for providing the stable and high-intensity uranium beam and secondary beams, and the STFC (UK). J.P.E. thanks D. Regnier for useful discussions. The work of K. Nomura was supported by the Tenure Track Pilot Programme of the Croatian Science Foundation, the {\'E}cole Polytechnique F{\'e}d{\'e}rale de Lausanne, and Project No. TTP-2018-07-3554, Exotic Nuclear Structure and Dynamics, with funds of the Croatian-Swiss Research Programme. B.D. and Z.L. were supported by the National Natural Science Foundation of China (Grants No. 12135004, No. 11635003, and No. 11961141004). R.T. was supported by JSPS Grant-in-Aid for JSPS Research Fellows JP14J08718. Publisher Copyright: {\textcopyright} 2022 American Physical Society.",

year = "2022",

month = feb,

day = "3",

doi = "10.1103/PhysRevC.105.024302",

language = "English",

volume = "105",

journal = "Physical Review C",

issn = "2469-9985",

number = "2",

}

Gerst, RB, Blazhev, A, Moschner, K, Doornenbal, P, Obertelli, A, Nomura, K, Ebran, JP, Hilaire, S, Libert, J, Authelet, G, Baba, H, Calvet, D, Château, F, Chen, S, Corsi, A, Delbart, A, Gheller, JM, Giganon, A, Gillibert, A, Lapoux, V, Motobayashi, T, Niikura, M, Paul, N, Roussé, JY, Sakurai, H, Santamaria, C, Steppenbeck, D, Taniuchi, R, Uesaka, T, Ando, T, Arici, T, Browne, F, Bruce, AM, Caroll, R, Chung, LX, Cortés, ML, Dewald, M, Ding, B, Flavigny, F, Franchoo, S, Górska, M, Gottardo, A, Jolie, J, Jungclaus, A, Lee, J, Lettmann, M, Linh, BD, Liu, J, Lizarazo, C, Momiyama, S, Nagamine, S, Nakatsuka, N, Nita, CR, Nobs, C, Olivier, L, Orlandi, R, Patel, Z, Podolyák, Z, Rudigier, M, Saito, T, Shand, C, Söderström, PA, Stefan, I, Vaquero, V, Werner, V, Wimmer, K & Xu, Z 2022, 'γ -ray spectroscopy of low-lying yrast and non-yrast states in neutron-rich Kr 94,95,96', Physical Review C, vol. 105, no. 2, 024302. https://doi.org/10.1103/PhysRevC.105.024302

TY - JOUR

T1 - γ -ray spectroscopy of low-lying yrast and non-yrast states in neutron-rich Kr 94,95,96

AU - Gerst, R. B.

AU - Blazhev, A.

AU - Moschner, K.

AU - Doornenbal, P.

AU - Obertelli, A.

AU - Nomura, K.

AU - Ebran, J. P.

AU - Hilaire, S.

AU - Libert, J.

AU - Authelet, G.

AU - Baba, H.

AU - Calvet, D.

AU - Château, F.

AU - Chen, S.

AU - Corsi, A.

AU - Delbart, A.

AU - Gheller, J. M.

AU - Giganon, A.

AU - Gillibert, A.

AU - Lapoux, V.

AU - Motobayashi, T.

AU - Niikura, M.

AU - Paul, N.

AU - Roussé, J. Y.

AU - Sakurai, H.

AU - Santamaria, C.

AU - Steppenbeck, D.

AU - Taniuchi, R.

AU - Uesaka, T.

AU - Ando, T.

AU - Arici, T.

AU - Browne, F.

AU - Bruce, A. M.

AU - Caroll, R.

AU - Chung, L. X.

AU - Cortés, M. L.

AU - Dewald, M.

AU - Ding, B.

AU - Flavigny, F.

AU - Franchoo, S.

AU - Górska, M.

AU - Gottardo, A.

AU - Jolie, J.

AU - Jungclaus, A.

AU - Lee, J.

AU - Lettmann, M.

AU - Linh, B. D.

AU - Liu, J.

AU - Lizarazo, C.

AU - Momiyama, S.

AU - Nagamine, S.

AU - Nakatsuka, N.

AU - Nita, C. R.

AU - Nobs, C.

AU - Olivier, L.

AU - Orlandi, R.

AU - Patel, Z.

AU - Podolyák, Zs

AU - Rudigier, M.

AU - Saito, T.

AU - Shand, C.

AU - Söderström, P. A.

AU - Stefan, I.

AU - Vaquero, V.

AU - Werner, V.

AU - Wimmer, K.

AU - Xu, Z.

N1 - Funding Information: This work is supported by the Deutsche Forschungsgemeinschaft (DFG—German Research Foundation) under Grant No. BL 1513/1-1 and by the BMBF under Grants No. 05P15PKFNA, No. 05P19PKFNA, No. 05P15RDFN1, No. 05P19RDFN1, and No. 05P21RDFN1. We thank the RIKEN Nishina Centre accelerator staff and the BigRIPS team for providing the stable and high-intensity uranium beam and secondary beams, and the STFC (UK). J.P.E. thanks D. Regnier for useful discussions. The work of K. Nomura was supported by the Tenure Track Pilot Programme of the Croatian Science Foundation, the École Polytechnique Fédérale de Lausanne, and Project No. TTP-2018-07-3554, Exotic Nuclear Structure and Dynamics, with funds of the Croatian-Swiss Research Programme. B.D. and Z.L. were supported by the National Natural Science Foundation of China (Grants No. 12135004, No. 11635003, and No. 11961141004). R.T. was supported by JSPS Grant-in-Aid for JSPS Research Fellows JP14J08718. Publisher Copyright: © 2022 American Physical Society.

PY - 2022/2/3

Y1 - 2022/2/3

N2 - We report on γ-ray spectroscopy of low-lying excited states in the neutron-rich Kr94,95,96 isotopes measured as part of the "Shell Evolution And Search for Two-plus energies At RIBF"(SEASTAR) campaign at the RIKEN Radioactive Isotope Beam Factory. Excited yrast and non-yrast states were observed, and half-lives extracted via geant4 simulations. In Kr94,96 candidates for the 31- state were identified. For Kr95, the prompt SEASTAR data were combined with delayed spectroscopic data measured with the EURICA array to observe transitions on top of the known (7/2)+ isomer at a level energy of 195.5(3) keV. The comparison of the new experimental results with five-dimensional collective Hamiltonian (5DCH) and mapped interacting boson model (IBM) calculations, both using the Gogny D1M interaction, could suggest oblate-prolate shape coexistence already in Kr96.

AB - We report on γ-ray spectroscopy of low-lying excited states in the neutron-rich Kr94,95,96 isotopes measured as part of the "Shell Evolution And Search for Two-plus energies At RIBF"(SEASTAR) campaign at the RIKEN Radioactive Isotope Beam Factory. Excited yrast and non-yrast states were observed, and half-lives extracted via geant4 simulations. In Kr94,96 candidates for the 31- state were identified. For Kr95, the prompt SEASTAR data were combined with delayed spectroscopic data measured with the EURICA array to observe transitions on top of the known (7/2)+ isomer at a level energy of 195.5(3) keV. The comparison of the new experimental results with five-dimensional collective Hamiltonian (5DCH) and mapped interacting boson model (IBM) calculations, both using the Gogny D1M interaction, could suggest oblate-prolate shape coexistence already in Kr96.

U2 - 10.1103/PhysRevC.105.024302

DO - 10.1103/PhysRevC.105.024302

M3 - Article

AN - SCOPUS:85124581071

SN - 2469-9985

VL - 105

JO - Physical Review C

JF - Physical Review C

IS - 2

M1 - 024302

ER -

γ -ray spectroscopy of low-lying yrast and non-yrast states in neutron-rich Kr 94,95,96

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