Evolution of octupole deformation in radium nuclei from Coulomb excitation of radioactive 222Ra and 228Ra  beams

P.A. Butler, L.P. Gaffney, P. Spagnoletti, K. Abrahams, Mike 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, L.G. Pedersen, C. Raison, P. Reiter, J.A. Rodriguez, 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

Research output: Contribution to journalArticle

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 222,228Ra 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 222Ra as pear shaped with stable octupole deformation, while 228Ra behaves like an octupole vibrator.
Original languageEnglish
Article number042503
Number of pages6
JournalPhysical Review Letters
Volume124
Issue number4
DOIs
Publication statusPublished - 31 Jan 2020

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radium isotopes
radium
nuclei
matrices
radioactive isotopes
excitation

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Butler, P.A. ; Gaffney, L.P. ; Spagnoletti, P. ; Abrahams, K. ; Bowry, Mike ; 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. ; Lozano, M. ; Nara Singh, B.S. ; O'Donnell, D. ; Ojala, J. ; Page, R.D. ; Pedersen, L.G. ; Raison, C. ; Reiter, P. ; Rodriguez, J.A. ; Rosiak, D. ; Rothe, S. ; Scheck, M. ; Seidlitz, M. ; Shneidman, T.M. ; Siebeck, B. ; Sinclair, J. ; Smith, J.F. ; Stryjczyk, M. ; Van Duppen, P. ; Vinals, S. ; Virtanen, V. ; Warr, N. ; Wrzosek-Lipska, K. ; Zielińska, M. / Evolution of octupole deformation in radium nuclei from Coulomb excitation of radioactive 222Ra and 228Ra  beams. In: Physical Review Letters. 2020 ; Vol. 124, No. 4.
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title = "Evolution of octupole deformation in radium nuclei from Coulomb excitation of radioactive 222Ra and 228Ra  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 222,228Ra 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 222Ra as pear shaped with stable octupole deformation, while 228Ra behaves like an octupole vibrator.",
author = "P.A. Butler and L.P. Gaffney and P. Spagnoletti and K. Abrahams and Mike Bowry and J. Cederk{\"a}ll and {de Angelis}, G. and {De Witte}, H. and P.E. Garrett and A. Goldkuhle and C. Henrich and A. Illana and K. Johnston and D.T. Joss and J.M. Keatings and N.A. Kelly 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 R.D. Page and L.G. Pedersen and C. Raison and P. Reiter and J.A. Rodriguez and D. Rosiak and S. Rothe and M. Scheck and M. Seidlitz and T.M. Shneidman and B. Siebeck and J. Sinclair and J.F. Smith and M. Stryjczyk and {Van Duppen}, P. and S. Vinals and V. Virtanen and N. Warr and K. Wrzosek-Lipska and M. Zielińska",
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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, Pedersen, LG, Raison, C, Reiter, P, Rodriguez, JA, 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 222Ra and 228Ra  beams', Physical Review Letters, vol. 124, no. 4, 042503. https://doi.org/10.1103/PhysRevLett.124.042503

Evolution of octupole deformation in radium nuclei from Coulomb excitation of radioactive 222Ra and 228Ra  beams. / Butler, P.A. ; Gaffney, L.P.; Spagnoletti, P.; Abrahams, K.; Bowry, Mike; 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.; Lozano, M.; Nara Singh, B.S.; O'Donnell, D.; Ojala, J.; Page, R.D.; Pedersen, L.G.; Raison, C.; Reiter, P.; Rodriguez, J.A.; Rosiak, D.; Rothe, S.; Scheck, M.; Seidlitz, M.; Shneidman, T.M.; Siebeck, B.; Sinclair, J.; Smith, J.F. ; Stryjczyk, M.; Van Duppen, P.; Vinals, S.; Virtanen, V.; Warr, N.; Wrzosek-Lipska, K.; Zielińska, M.

In: Physical Review Letters, Vol. 124, No. 4, 042503, 31.01.2020.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Evolution of octupole deformation in radium nuclei from Coulomb excitation of radioactive 222Ra and 228Ra  beams

AU - Butler, P.A.

AU - Gaffney, L.P.

AU - Spagnoletti, P.

AU - Abrahams, K.

AU - Bowry, Mike

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 - Pedersen, L.G.

AU - Raison, C.

AU - Reiter, P.

AU - Rodriguez, J.A.

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 222,228Ra 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 222Ra as pear shaped with stable octupole deformation, while 228Ra 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 222,228Ra 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 222Ra as pear shaped with stable octupole deformation, while 228Ra behaves like an octupole vibrator.

U2 - 10.1103/PhysRevLett.124.042503

DO - 10.1103/PhysRevLett.124.042503

M3 - Article

VL - 124

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 4

M1 - 042503

ER -