20th International School on Nuclear Physics, Neutron Physics and Applications | |
Determination of the B(E3, 0+ → 3?)-excitation strength in octupole-correlated nuclei near A ≈ 224 by the means of Coulomb excitation at REX-ISOLDE | |
Scheck, M.^1,2,3 ; Gaffney, L.P.^3,4 ; Butler, P.A.^3 ; Hayes, A.B.^5 ; Wenander, F.^6 ; Albers, M.^7 ; Bastin, B.^8 ; Bauer, C.^9 ; Blazhev, A.^7 ; Bönig, S.^9 ; Bree, N.^4 ; Cederkäil, J.^10 ; Chupp, T.^11 ; Cline, D.^5 ; Cocolios, T.E.^6 ; Davinson, T.^12 ; Witte, H De^4 ; Diriken, J.^4 ; Grahn, T.^13,14 ; Gregor, E.T.^1,2 ; Herzan, A.^13 ; Huyse, M.^4 ; Jenkins, D.G.^15 ; Joss, D.T.^3 ; Kesteloot, N.^4 ; Konki, J.^13 ; Kowalczyk, M.^16 ; Kröll, Th.^9 ; Kwan, E.^17 ; Lutter, R.^18,19 ; Moschner, K.^7 ; Napiorkowski, P.^16 ; Pakarinen, J.^6,13,14 ; Pfeiffer, M.^7 ; Radeck, D.^7 ; Reiter, P.^7 ; Reynders, K.^4 ; Rigby, S.V.^3 ; Robledo, L.M.^20 ; Rudigier, M.^7 ; Sambi, S.^4 ; Seidlitz, M.^7 ; Siebeck, B.^7 ; Stora, T.^6 ; Thoele, P.^7 ; Duppen, P. Van^4 ; Vermeulen, M.J.^15 ; Schmid, M. Von^9 ; Voulot, D.^6 ; Warr, N.^7 ; Wimmer, K.^19 ; Wrzosek-Lipska, K.^4,16 ; Wu, C.Y.^17 ; Zieliska, M.^16,21 | |
School of Engineering, University of the West of Scotland, Paisley | |
PA1 2BE, United Kingdom^1 | |
SUPA, Scottish Universities Physics Alliance, Glasgow | |
G12 8QQ, United Kingdom^2 | |
Oliver Lodge Laboratory, University of Liverpool, Liverpool | |
L69 7ZE, United Kingdom^3 | |
Instituut voor Kern- en Stralingsfysica, KU Leuven, Leuven | |
B-3001, Belgium^4 | |
Department of Physics and Astronomy, University of Rochester, Rochester | |
NY | |
14627-0171, United States^5 | |
ISOLDE, CERN, Geneva | |
CH-1211, Switzerland^6 | |
Institut Fr Kernphysik, Universität zu Köln, Köln | |
D-50937, Germany^7 | |
GANIL, BP 55027, Caen | |
F-14076, France^8 | |
Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt | |
D-64289, Germany | |
(10) Department of Nuclear Physics, Lund University, PO Box 118, Lund | |
221 00, Sweden | |
(11) Department of Physics, University of Michigan, Ann Arbor | |
MI | |
48104, United States | |
(12) School of Physics and Astronomy, University of Edinburgh, Edinburgh | |
EH9 3JZ, United Kingdom | |
(13) Department of Physics, University of Jyväskylä, Jyväskylä | |
FI-40014, Finland | |
(14) Helsinki Institute of Physics, PO Box 64, Helsinki | |
FI-00014, Finland | |
(15) Department of Physics, University of York, York | |
YO10 5DD, United Kingdom | |
(16) Heavy Ion Laboratory, University of Warsaw, Warsaw | |
02-093, Poland | |
(17) Physics Division, Lawrence Livermore National Laboratory, Livermore | |
CA | |
94551, United States | |
(18) Maier-Leibnitz-Laboratorium, Ludwig-Maximilians-Universität, Garching | |
D-85748, Germany | |
(19) Physik Department E12, Technische Universität München, Garching | |
D-85748, Germany | |
(20) Departamento de Fisica Teorica, Universidad Autónoma de Madrid, Madrid | |
28049, Spain | |
(21) DSM/IRFU/SPhN, CEA Saclay, Gif-sur-Yvette | |
F-91191, France^9 | |
关键词: Atomic system; Beam particles; Coulomb excitation; De-excitations; Excitation strengths; Gamma ray yields; Matrix elements; Schiff moment; | |
Others : https://iopscience.iop.org/article/10.1088/1742-6596/533/1/012007/pdf DOI : 10.1088/1742-6596/533/1/012007 |
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来源: IOP | |
【 摘 要 】
The IS475 collaboration conducted Coulomb-excitation experiments with postaccelerated radioactive220Rn and224Ra beams at the REX-ISOLDE facility. The beam particles (Ebeam≈ 2.83 MeV/u) were Coulomb excited using60Ni,114Cd, and120Sn scattering targets. De-excitation γ-rays were detected employing the Miniball array and scattered particles were detected in a silicon detector. Exploiting the Coulomb-excitation code GOSIA for each nucleus several matrix elements could be obtained from the measured γ-ray yields. The extracted 〈3-||Ê3||0+〉 matrix element allows for the conclusion that, while220Rn represents an octupole vibrational system,224Ra has already substantial octupole correlations in its ground state. An observation that has implications for the search of CP-violating Schiff moments in the atomic systems of the adjacent odd-mass nuclei.
【 预 览 】
Files | Size | Format | View |
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Determination of the B(E3, 0+ → 3?)-excitation strength in octupole-correlated nuclei near A ≈ 224 by the means of Coulomb excitation at REX-ISOLDE | 811KB | download |