1. The observation of vibrating pear-shapes in radon nuclei
- Author
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M. Zielińska, L. G. Pedersen, M. Bowry, N. Warr, M. Seidlitz, Liam Gaffney, P. E. Garrett, M. Lozano, A. Illana, D. Rosiak, V. Virtanen, R. D. Page, J. M. Keatings, P. Reiter, M. Stryjczyk, K. Wrzosek-Lipska, B. Siebeck, N. A. Kelly, D. T. Joss, H. De Witte, David O'Donnell, P. Van Duppen, J. Sinclair, K. Abrahams, S. Vinals, Sebastian Rothe, C. Raison, J. Ojala, M. Komorowska, B. S. Nara Singh, P. A. Butler, T.M. Shneidman, C. Henrich, A. Goldkuhle, J. Cederkäll, Timothy Chupp, J. Konki, Jose Rodriguez, P. Spagnoletti, J. F. Smith, G. de Angelis, Karl Johnston, Marcus Scheck, T. Kröll, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Science and Technology Facilities Council (UK), Federal Ministry of Education and Research (Germany), National Science Centre (Poland), European Commission, Research Foundation - Flanders, Belgian Science Policy Office, Russian Foundation for Basic Research, and SCOAP
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Physics beyond the Standard Model ,Science ,Nuclear Theory ,General Physics and Astronomy ,chemistry.chemical_element ,Radon ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,01 natural sciences ,Article ,General Biochemistry, Genetics and Molecular Biology ,Radium ,Quantum state ,0103 physical sciences ,CP: violation ,ground state ,Nuclear Physics - Experiment ,Physics::Atomic Physics ,Experimental nuclear physics ,lcsh:Science ,010306 general physics ,numerical calculations ,Nuclear Experiment ,Physics ,Multidisciplinary ,Isotope ,010308 nuclear & particles physics ,new physics ,nucleus ,radon ,General Chemistry ,Publisher Correction ,radium ,exotic nuclei ,electric moment ,chemistry ,radioactivity ,Moment (physics) ,Atomic nucleus ,CP violation ,lcsh:Q ,Exotic atoms and molecules ,Atomic physics ,ydinfysiikka - Abstract
6 pags., 4 fig.s, 1 tab. -- Open Access funded by Creative Commons Atribution Licence 4.0, There is a large body of evidence that atomic nuclei can undergo octupole distortion and assume the shape of a pear. This phenomenon is important for measurements of electric-dipole moments of atoms, which would indicate CP violation and hence probe physics beyond the Standard Model of particle physics. Isotopes of both radon and radium have been identified as candidates for such measurements. Here, we observed the low-lying quantum states in Rn and Rn by accelerating beams of these radioactive nuclei. We show that radon isotopes undergo octupole vibrations but do not possess static pear-shapes in their ground states. We conclude that radon atoms provide less favourable conditions for the enhancement of a measurable atomic electric-dipole moment., The support of the ISOLDE Collaboration and technical teams is acknowledged. This work was supported by the following Research Councils and Grants: Science and Technology Facilities Council (STFC; UK) grants ST/ P004598/1, ST/L005808/1; Federal Ministry of Education and Research (BMBF; Germany) grants 05P18RDCIA, 05P15PKCIA and 05P18PKCIA and the “Verbundprojekt 05P2018”; National Science Centre (Poland) grant 2015/18/M/ST2/00523; European Union’s Horizon 2020 Framework research and innovation programme 654002 (ENSAR2); Marie Skłodowska-Curie COFUND grant (EU-CERN) 665779; Research Foundation Flanders (FWO, Belgium), by GOA/2015/010 (BOF KU Leuven) and the Interuniversity Attraction Poles Programme initiated by the Belgian Science Policy Office (BriX network P7/12); RFBR(Russia) grant 17-52-12015.
- Published
- 2020
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