The observation of vibrating pear-shapes in radon nuclei
Abstrak
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 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. Octupole deformation in nuclei is important to understand nuclear structure and electric dipole moments of heavy atoms. Here the authors measure energies of excited quantum states in radon isotopes and find that these isotopes do not provide favourable conditions in the search for CP-violation.
Penulis (47)
P. Butler
L. Gaffney
L. Gaffney
P. Spagnoletti
J. Konki
M. Scheck
J. Smith
K. Abrahams
M. Bowry
J. Cederkäll
T. Chupp
G. Angelis
H. Witte
P. Garrett
A. Goldkuhle
C. Henrich
A. Illana
K. Johnston
D. Joss
J. Keatings
N. Kelly
M. Komorowska
T. Kröll
M. Lozano
B. S. N. Singh
D. O’Donnell
J. Ojala
J. Ojala
R. Page
L. Pedersen
C. Raison
P. Reiter
J. Rodriguez
D. Rosiak
S. Rothe
T. Shneidman
B. Siebeck
M. Seidlitz
J. Sinclair
M. Stryjczyk
P. Duppen
S. Viñals
V. Virtanen
V. Virtanen
N. Warr
K. Wrzosek-Lipska
M. Zielińska
Akses Cepat
- Tahun Terbit
- 2019
- Bahasa
- en
- Total Sitasi
- 38×
- Sumber Database
- Semantic Scholar
- DOI
- 10.1038/s41467-019-10494-5
- Akses
- Open Access ✓