Evolution of Octupole Deformation in Radium Nuclei from Coulomb Excitation of Radioactive ^{222}Ra and ^{228}Ra Beams

P. A. Butler; L. P. Gaffney; P. Spagnoletti; K. Abrahams; M. Bowry; J. Cederkäll; G. de Angelis; H. De Witte; P. E. Garrett; A. Goldkuhle; C. Henrich; A. Illana; K. Johnston; D. T. Joss; J. M. Keatings; N. A. Kelly; M. Komorowska; J. Konki; T. Kröll; M. Lozano; B. S. Nara Singh; D. O'Donnell; J. Ojala; R. D. Page; C. Raison; P. Reiter; D. Rosiak; S. Rothe; M. Scheck; M. Seidlitz; T. M. Shneidman; B. Siebeck; J. Sinclair; J. F. Smith; M. Stryjczyk; P. Van Duppen; S. Vinals; V. Virtanen; N. Warr; K. Wrzosek-Lipska; M. Zielińska

doi:10.1103/PhysRevLett.124.042503

Evolution of Octupole Deformation in Radium Nuclei from Coulomb Excitation of Radioactive ^{222}Ra and ^{228}Ra Beams

P. A. Butler, L. P. Gaffney, P. Spagnoletti, K. Abrahams, M. Bowry, J. Cederkäll, G. de Angelis, H. De Witte, P. E. Garrett, A. Goldkuhle, C. Henrich, A. Illana, K. Johnston, D. T. Joss, J. M. Keatings, N. A. Kelly, M. Komorowska, J. Konki, T. Kröll, M. LozanoB. S. Nara Singh, D. O'Donnell, J. Ojala, R. D. Page, C. Raison, P. Reiter, D. Rosiak, S. Rothe, M. Scheck, M. Seidlitz, T. M. Shneidman, B. Siebeck, J. Sinclair, J. F. Smith, M. Stryjczyk, P. Van Duppen, S. Vinals, V. Virtanen, N. Warr, K. Wrzosek-Lipska, M. Zielińska

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Abstract

There is sparse direct experimental evidence that atomic nuclei can exhibit stable "pear" shapes arising from strong octupole correlations. In order to investigate the nature of octupole collectivity in radium isotopes, electric octupole (E3) matrix elements have been determined for transitions in ^{222,228}Ra nuclei using the method of sub-barrier, multistep Coulomb excitation. Beams of the radioactive radium isotopes were provided by the HIE-ISOLDE facility at CERN. The observed pattern of E3 matrix elements for different nuclear transitions is explained by describing ^{222}Ra as pear shaped with stable octupole deformation, while ^{228}Ra behaves like an octupole vibrator.

Original language	English
Number of pages	1
Journal	Physical Review Letters
Volume	124
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevLett.124.042503
Publication status	Published - 2020 Jan 31

Subject classification (UKÄ)

Subatomic Physics

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Butler, P. A., Gaffney, L. P., Spagnoletti, P., Abrahams, K., Bowry, M., Cederkäll, J., de Angelis, G., De Witte, H., Garrett, P. E., Goldkuhle, A., Henrich, C., Illana, A., Johnston, K., Joss, D. T., Keatings, J. M., Kelly, N. A., Komorowska, M., Konki, J., Kröll, T., ... Zielińska, M. (2020). Evolution of Octupole Deformation in Radium Nuclei from Coulomb Excitation of Radioactive ^{222}Ra and ^{228}Ra Beams. Physical Review Letters, 124(4). https://doi.org/10.1103/PhysRevLett.124.042503

@article{9fb9ab8db2d94bbab0318e52b239dc94,

title = "Evolution of Octupole Deformation in Radium Nuclei from Coulomb Excitation of Radioactive ^{222}Ra and ^{228}Ra Beams",

abstract = "There is sparse direct experimental evidence that atomic nuclei can exhibit stable {"}pear{"} shapes arising from strong octupole correlations. In order to investigate the nature of octupole collectivity in radium isotopes, electric octupole (E3) matrix elements have been determined for transitions in ^{222,228}Ra nuclei using the method of sub-barrier, multistep Coulomb excitation. Beams of the radioactive radium isotopes were provided by the HIE-ISOLDE facility at CERN. The observed pattern of E3 matrix elements for different nuclear transitions is explained by describing ^{222}Ra as pear shaped with stable octupole deformation, while ^{228}Ra behaves like an octupole vibrator.",

author = "Butler, {P. A.} and Gaffney, {L. P.} and P. Spagnoletti and K. Abrahams and M. Bowry and J. Cederk{\"a}ll and {de Angelis}, G. and {De Witte}, H. and Garrett, {P. E.} and A. Goldkuhle and C. Henrich and A. Illana and K. Johnston and Joss, {D. T.} and Keatings, {J. M.} and Kelly, {N. A.} and M. Komorowska and J. Konki and T. Kr{\"o}ll and M. Lozano and {Nara Singh}, {B. S.} and D. O'Donnell and J. Ojala and Page, {R. D.} and C. Raison and P. Reiter and D. Rosiak and S. Rothe and M. Scheck and M. Seidlitz and Shneidman, {T. M.} and B. Siebeck and J. Sinclair and Smith, {J. F.} and M. Stryjczyk and {Van Duppen}, P. and S. Vinals and V. Virtanen and N. Warr and K. Wrzosek-Lipska and M. Zieli{\'n}ska",

year = "2020",

month = jan,

day = "31",

doi = "10.1103/PhysRevLett.124.042503",

language = "English",

volume = "124",

journal = "Physical Review Letters",

issn = "1079-7114",

publisher = "American Physical Society",

number = "4",

}

Butler, PA, Gaffney, LP, Spagnoletti, P, Abrahams, K, Bowry, M, Cederkäll, J, de Angelis, G, De Witte, H, Garrett, PE, Goldkuhle, A, Henrich, C, Illana, A, Johnston, K, Joss, DT, Keatings, JM, Kelly, NA, Komorowska, M, Konki, J, Kröll, T, Lozano, M, Nara Singh, BS, O'Donnell, D, Ojala, J, Page, RD, Raison, C, Reiter, P, Rosiak, D, Rothe, S, Scheck, M, Seidlitz, M, Shneidman, TM, Siebeck, B, Sinclair, J, Smith, JF, Stryjczyk, M, Van Duppen, P, Vinals, S, Virtanen, V, Warr, N, Wrzosek-Lipska, K & Zielińska, M 2020, 'Evolution of Octupole Deformation in Radium Nuclei from Coulomb Excitation of Radioactive ^{222}Ra and ^{228}Ra Beams', Physical Review Letters, vol. 124, no. 4. https://doi.org/10.1103/PhysRevLett.124.042503

TY - JOUR

T1 - Evolution of Octupole Deformation in Radium Nuclei from Coulomb Excitation of Radioactive ^{222}Ra and ^{228}Ra Beams

AU - Butler, P. A.

AU - Gaffney, L. P.

AU - Spagnoletti, P.

AU - Abrahams, K.

AU - Bowry, M.

AU - Cederkäll, J.

AU - de Angelis, G.

AU - De Witte, H.

AU - Garrett, P. E.

AU - Goldkuhle, A.

AU - Henrich, C.

AU - Illana, A.

AU - Johnston, K.

AU - Joss, D. T.

AU - Keatings, J. M.

AU - Kelly, N. A.

AU - Komorowska, M.

AU - Konki, J.

AU - Kröll, T.

AU - Lozano, M.

AU - Nara Singh, B. S.

AU - O'Donnell, D.

AU - Ojala, J.

AU - Page, R. D.

AU - Raison, C.

AU - Reiter, P.

AU - Rosiak, D.

AU - Rothe, S.

AU - Scheck, M.

AU - Seidlitz, M.

AU - Shneidman, T. M.

AU - Siebeck, B.

AU - Sinclair, J.

AU - Smith, J. F.

AU - Stryjczyk, M.

AU - Van Duppen, P.

AU - Vinals, S.

AU - Virtanen, V.

AU - Warr, N.

AU - Wrzosek-Lipska, K.

AU - Zielińska, M.

PY - 2020/1/31

Y1 - 2020/1/31

N2 - There is sparse direct experimental evidence that atomic nuclei can exhibit stable "pear" shapes arising from strong octupole correlations. In order to investigate the nature of octupole collectivity in radium isotopes, electric octupole (E3) matrix elements have been determined for transitions in ^{222,228}Ra nuclei using the method of sub-barrier, multistep Coulomb excitation. Beams of the radioactive radium isotopes were provided by the HIE-ISOLDE facility at CERN. The observed pattern of E3 matrix elements for different nuclear transitions is explained by describing ^{222}Ra as pear shaped with stable octupole deformation, while ^{228}Ra behaves like an octupole vibrator.

AB - There is sparse direct experimental evidence that atomic nuclei can exhibit stable "pear" shapes arising from strong octupole correlations. In order to investigate the nature of octupole collectivity in radium isotopes, electric octupole (E3) matrix elements have been determined for transitions in ^{222,228}Ra nuclei using the method of sub-barrier, multistep Coulomb excitation. Beams of the radioactive radium isotopes were provided by the HIE-ISOLDE facility at CERN. The observed pattern of E3 matrix elements for different nuclear transitions is explained by describing ^{222}Ra as pear shaped with stable octupole deformation, while ^{228}Ra behaves like an octupole vibrator.

U2 - 10.1103/PhysRevLett.124.042503

DO - 10.1103/PhysRevLett.124.042503

M3 - Article

C2 - 32058764

AN - SCOPUS:85079514926

SN - 1079-7114

VL - 124

JO - Physical Review Letters

JF - Physical Review Letters

IS - 4

ER -

Evolution of Octupole Deformation in Radium Nuclei from Coulomb Excitation of Radioactive ^{222}Ra and ^{228}Ra Beams

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