Coulomb excitation of pear-shaped nuclei
Butler, P., Gaffney, L., Spagnoletti, P., Konki, J., Scheck, M., Smith, J., Abrahams, K., Bowry, M., Cederkäll, J., Chupp, T., de Angelis, G., De Witte, H., Garrett, P., Goldkuhle, A., Henrich, C., Illana, A., Johnston, K., Joss, D., Keatings, J., . . . Zielinska, M. (2019). Coulomb excitation of pear-shaped nuclei. In G. de Angelis, & L. Corradi (Eds.), NSD 2019 : IV International Conference on Nuclear Structure and Dynamics (Article 01007). EDP Sciences. EPJ Web of Conferences, 223. https://doi.org/10.1051/epjconf/201922301007
Julkaistu sarjassa
EPJ Web of ConferencesTekijät
Päivämäärä
2019Tekijänoikeudet
© The Authors. 2019
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 have observed the low-lying quantum states in 224Rn and 226Rn 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.
Julkaisija
EDP SciencesEmojulkaisun ISBN
978-2-7598-9084-2Konferenssi
International Conference on Nuclear Structure and DynamicsKuuluu julkaisuun
NSD 2019 : IV International Conference on Nuclear Structure and DynamicsISSN Hae Julkaisufoorumista
2101-6275Asiasanat
Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/33776994
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Do nuclei go pear-shaped? Coulomb excitation of 220Rn and 224Ra at REX-ISOLDE (CERN)
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