6533b873fe1ef96bd12d575c
RESEARCH PRODUCT
Coulomb excitation of pear-shaped nuclei
M. StryjczykP. ReiterM. KomorowskaM. LozanoA. IllanaSilvia VinalsB. SiebeckLine PedersenMichael BowryT. KröllMarcus ScheckN. WarrLiam GaffneyLiam GaffneyD. RosiakJ. SinclairM. ZielińskaJ. F. SmithA. GoldkuhleD. T. JossNicola KellySebastian RotheDavid O'donnellM. SeidlitzRobert PageP. A. ButlerTimur ShneidmanKenzo AbrahamsBondili Nara SinghGiacomo De AngelisV. VirtanenV. VirtanenKarl JohnstonJ. M. KeatingsJ. OjalaJ. OjalaJoakim CederkällP. E. GarrettKasia Wrzosek-lipskaC. HenrichHilde De WitteChristopher RaisonP. SpagnolettiPiet Van DuppenJoonas KonkiTimothy ChuppJose Rodriguezsubject
PhysicsIsotope010308 nuclear & particles physicsPhysicsQC1-999Physics beyond the Standard Modelchemistry.chemical_elementRadonCoulomb excitation[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]01 natural scienceschemistryQuantum state0103 physical sciencesMoment (physics)Atomic nucleusCP violationNuclear Physics - ExperimentPhysics::Atomic PhysicsAtomic physics010306 general physicsydinfysiikkadescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-05-13 |