Shape coexistence revealed in the N= Z isotope 72 Kr through inelastic scattering

K. Wimmer; T. Arici; W. Korten; P. Doornenbal; J. P. Delaroche; M. Girod; J. Libert; T. R. Rodríguez; P. Aguilera; A. Algora; T. Ando; H. Baba; B. Blank; A. Boso; S. Chen; A. Corsi; P. Davies; G. de Angelis; G. de France; D. T. Doherty; J. Gerl; R. Gernhäuser; T. Goigoux; D. Jenkins; G. Kiss; S. Koyama; T. Motobayashi; S. Nagamine; M. Niikura; S. Nishimura; A. Obertelli; D. Lubos; V. H. Phong; B. Rubio; E. Sahin; T. Y. Saito; H. Sakurai; L. Sinclair; D. Steppenbeck; R. Taniuchi; V. Vaquero; R. Wadsworth; J. Wu; M. Zielinska

doi:10.1140/epja/s10050-020-00171-3

Shape coexistence revealed in the N= Z isotope ⁷² Kr through inelastic scattering

K. Wimmer^*, T. Arici, W. Korten, P. Doornenbal, J. P. Delaroche, M. Girod, J. Libert, T. R. Rodríguez, P. Aguilera, A. Algora, T. Ando, H. Baba, B. Blank, A. Boso, S. Chen, A. Corsi, P. Davies, G. de Angelis, G. de France, D. T. DohertyJ. Gerl, R. Gernhäuser, T. Goigoux, D. Jenkins, G. Kiss, S. Koyama, T. Motobayashi, S. Nagamine, M. Niikura, S. Nishimura, A. Obertelli, D. Lubos, V. H. Phong, B. Rubio, E. Sahin, T. Y. Saito, H. Sakurai, L. Sinclair, D. Steppenbeck, R. Taniuchi, V. Vaquero, R. Wadsworth, J. Wu, M. Zielinska

^*Corresponding author for this work

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

Abstract

The N= Z= 36 nucleus ⁷²Kr has been studied by inelastic scattering at intermediate energies. Two targets, ⁹Be and ¹⁹⁷Au, were used to extract the nuclear deformation length, δ_N, and the reduced E2 transition probability, B(E2). The previously unknown non-yrast 2 ⁺ and 4 ⁺ states as well as a new candidate for the octupole 3 ^- state have been observed in the scattering on the Be target and placed in the level scheme based on γ- γ coincidences. The second 2 ⁺ state was also observed in the scattering on the Au target and the B(E2;22+→01+) value could be determined for the first time. Analyzing the results in terms of a two-band mixing model shows clear evidence for a oblate-prolate shape coexistence and can be explained by a shape change from an oblate ground state to prolate deformed yrast band from the first 2 ⁺ state. This interpretation is corroborated by beyond mean field calculations using the Gogny D1S interaction.

Original language	English
Article number	159
Number of pages	12
Journal	European Physical Journal A
Volume	56
Issue number	6
DOIs	https://doi.org/10.1140/epja/s10050-020-00171-3
Publication status	Published - 3 Jun 2020

Bibliographical note

© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2020. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details.

Access to Document

10.1140/epja/s10050-020-00171-3

accepted_paper
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2020. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details.
Accepted author manuscript, 1.24 MB

http://arxiv.org/abs/2005.10594v2

Cite this

Wimmer, K., Arici, T., Korten, W., Doornenbal, P., Delaroche, J. P., Girod, M., Libert, J., Rodríguez, T. R., Aguilera, P., Algora, A., Ando, T., Baba, H., Blank, B., Boso, A., Chen, S., Corsi, A., Davies, P., de Angelis, G., de France, G., ... Zielinska, M. (2020). Shape coexistence revealed in the N= Z isotope ⁷² Kr through inelastic scattering. European Physical Journal A, 56(6), Article 159. https://doi.org/10.1140/epja/s10050-020-00171-3

@article{aa6de25f504a435781dfd30dd79c286d,

title = "Shape coexistence revealed in the N= Z isotope 72 Kr through inelastic scattering",

abstract = "The N= Z= 36 nucleus 72Kr has been studied by inelastic scattering at intermediate energies. Two targets, 9Be and 197Au, were used to extract the nuclear deformation length, δN, and the reduced E2 transition probability, B(E2). The previously unknown non-yrast 2 + and 4 + states as well as a new candidate for the octupole 3 - state have been observed in the scattering on the Be target and placed in the level scheme based on γ- γ coincidences. The second 2 + state was also observed in the scattering on the Au target and the B(E2;22+→01+) value could be determined for the first time. Analyzing the results in terms of a two-band mixing model shows clear evidence for a oblate-prolate shape coexistence and can be explained by a shape change from an oblate ground state to prolate deformed yrast band from the first 2 + state. This interpretation is corroborated by beyond mean field calculations using the Gogny D1S interaction.",

author = "K. Wimmer and T. Arici and W. Korten and P. Doornenbal and Delaroche, {J. P.} and M. Girod and J. Libert and Rodr{\'i}guez, {T. R.} and P. Aguilera and A. Algora and T. Ando and H. Baba and B. Blank and A. Boso and S. Chen and A. Corsi and P. Davies and {de Angelis}, G. and {de France}, G. and Doherty, {D. T.} and J. Gerl and R. Gernh{\"a}user and T. Goigoux and D. Jenkins and G. Kiss and S. Koyama and T. Motobayashi and S. Nagamine and M. Niikura and S. Nishimura and A. Obertelli and D. Lubos and Phong, {V. H.} and B. Rubio and E. Sahin and Saito, {T. Y.} and H. Sakurai and L. Sinclair and D. Steppenbeck and R. Taniuchi and V. Vaquero and R. Wadsworth and J. Wu and M. Zielinska",

note = "{\textcopyright} Societ{\`a} Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2020. This is an author-produced version of the published paper. Uploaded in accordance with the publisher{\textquoteright}s self-archiving policy. Further copying may not be permitted; contact the publisher for details.",

year = "2020",

month = jun,

day = "3",

doi = "10.1140/epja/s10050-020-00171-3",

language = "English",

volume = "56",

journal = "European Physical Journal A",

issn = "1434-6001",

publisher = "Springer",

number = "6",

}

Wimmer, K, Arici, T, Korten, W, Doornenbal, P, Delaroche, JP, Girod, M, Libert, J, Rodríguez, TR, Aguilera, P, Algora, A, Ando, T, Baba, H, Blank, B, Boso, A, Chen, S, Corsi, A, Davies, P, de Angelis, G, de France, G, Doherty, DT, Gerl, J, Gernhäuser, R, Goigoux, T, Jenkins, D, Kiss, G, Koyama, S, Motobayashi, T, Nagamine, S, Niikura, M, Nishimura, S, Obertelli, A, Lubos, D, Phong, VH, Rubio, B, Sahin, E, Saito, TY, Sakurai, H, Sinclair, L, Steppenbeck, D, Taniuchi, R, Vaquero, V, Wadsworth, R, Wu, J & Zielinska, M 2020, 'Shape coexistence revealed in the N= Z isotope ⁷² Kr through inelastic scattering', European Physical Journal A, vol. 56, no. 6, 159. https://doi.org/10.1140/epja/s10050-020-00171-3

TY - JOUR

T1 - Shape coexistence revealed in the N= Z isotope 72 Kr through inelastic scattering

AU - Wimmer, K.

AU - Arici, T.

AU - Korten, W.

AU - Doornenbal, P.

AU - Delaroche, J. P.

AU - Girod, M.

AU - Libert, J.

AU - Rodríguez, T. R.

AU - Aguilera, P.

AU - Algora, A.

AU - Ando, T.

AU - Baba, H.

AU - Blank, B.

AU - Boso, A.

AU - Chen, S.

AU - Corsi, A.

AU - Davies, P.

AU - de Angelis, G.

AU - de France, G.

AU - Doherty, D. T.

AU - Gerl, J.

AU - Gernhäuser, R.

AU - Goigoux, T.

AU - Jenkins, D.

AU - Kiss, G.

AU - Koyama, S.

AU - Motobayashi, T.

AU - Nagamine, S.

AU - Niikura, M.

AU - Nishimura, S.

AU - Obertelli, A.

AU - Lubos, D.

AU - Phong, V. H.

AU - Rubio, B.

AU - Sahin, E.

AU - Saito, T. Y.

AU - Sakurai, H.

AU - Sinclair, L.

AU - Steppenbeck, D.

AU - Taniuchi, R.

AU - Vaquero, V.

AU - Wadsworth, R.

AU - Wu, J.

AU - Zielinska, M.

N1 - © Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2020. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details.

PY - 2020/6/3

Y1 - 2020/6/3

N2 - The N= Z= 36 nucleus 72Kr has been studied by inelastic scattering at intermediate energies. Two targets, 9Be and 197Au, were used to extract the nuclear deformation length, δN, and the reduced E2 transition probability, B(E2). The previously unknown non-yrast 2 + and 4 + states as well as a new candidate for the octupole 3 - state have been observed in the scattering on the Be target and placed in the level scheme based on γ- γ coincidences. The second 2 + state was also observed in the scattering on the Au target and the B(E2;22+→01+) value could be determined for the first time. Analyzing the results in terms of a two-band mixing model shows clear evidence for a oblate-prolate shape coexistence and can be explained by a shape change from an oblate ground state to prolate deformed yrast band from the first 2 + state. This interpretation is corroborated by beyond mean field calculations using the Gogny D1S interaction.

AB - The N= Z= 36 nucleus 72Kr has been studied by inelastic scattering at intermediate energies. Two targets, 9Be and 197Au, were used to extract the nuclear deformation length, δN, and the reduced E2 transition probability, B(E2). The previously unknown non-yrast 2 + and 4 + states as well as a new candidate for the octupole 3 - state have been observed in the scattering on the Be target and placed in the level scheme based on γ- γ coincidences. The second 2 + state was also observed in the scattering on the Au target and the B(E2;22+→01+) value could be determined for the first time. Analyzing the results in terms of a two-band mixing model shows clear evidence for a oblate-prolate shape coexistence and can be explained by a shape change from an oblate ground state to prolate deformed yrast band from the first 2 + state. This interpretation is corroborated by beyond mean field calculations using the Gogny D1S interaction.

UR - http://www.scopus.com/inward/record.url?scp=85085970831&partnerID=8YFLogxK

U2 - 10.1140/epja/s10050-020-00171-3

DO - 10.1140/epja/s10050-020-00171-3

M3 - Article

AN - SCOPUS:85085970831

SN - 1434-6001

VL - 56

JO - European Physical Journal A

JF - European Physical Journal A

IS - 6

M1 - 159

ER -

Shape coexistence revealed in the N= Z isotope ⁷² Kr through inelastic scattering

Abstract

Bibliographical note

Access to Document

Other files and links

Nuclear Physics Consolidated Grant

Nuclear Physics Consolidated Grant

Cite this

Shape coexistence revealed in the N= Z isotope 72 Kr through inelastic scattering

Abstract

Bibliographical note

Access to Document

Other files and links

Projects

Nuclear Physics Consolidated Grant

Nuclear Physics Consolidated Grant

Cite this

Shape coexistence revealed in the N= Z isotope ⁷² Kr through inelastic scattering