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The observation of vibrating pear-shapes in radon nuclei

AuthorsButler, P.A.; Gaffney, L.P.; Spagnoletti, P.; Konki, J.; Scheck, M.; Smith, J.F.; Abrahams, K.; Bowry, M.; Cederkäll, J.; Chupp, T.; 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.; 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.; Shneidman, T.M.; Siebeck, B.; Seidlitz, M.; Sinclair, J.; Stryjczyk, M.; Van Duppen, P.; Viñals, S. ; Virtanen, V.; Warr, N.; Wrzosek-Lipska, K.; Zielinska, M.
Issue Date6-Jun-2019
PublisherNature Publishing Group
CitationNature Communications ) 10: 2473 (2019)
AbstractThere 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.
Description6 pags., 4 fig.s, 1 tab. -- Open Access funded by Creative Commons Atribution Licence 4.0
Publisher version (URL)http://dx.doi.org/10.1038/s41467-019-10494-5
Identifiersdoi: 10.1038/s41467-019-10494-5
issn: 2041-1723
Appears in Collections:(CFMAC-IEM) Artículos
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