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Inverse odd-even staggering in nuclear charge radii and possible octupole collectivity in At217,218,219 revealed by in-source laser spectroscopy
- Source :
- Physical Review C. 99
- Publication Year :
- 2019
- Publisher :
- American Physical Society (APS), 2019.
-
Abstract
- Hyperfine-structure parameters and isotope shifts for the 795-nm atomic transitions in $^{217,218,219}$At have been measured at CERN-ISOLDE, using the in-source resonance-ionization spectroscopy technique. Magnetic dipole and electric quadrupole moments, and changes in the nuclear mean-square charge radii, have been deduced. A large inverse odd-even staggering in radii, which may be associated with the presence of octupole collectivity, has been observed. Namely, the radius of the odd-odd isotope $^{218}$At has been found to be larger than the average of its even-$N$ neighbors, $^{217,219}$At. The discrepancy between the additivity-rule prediction and experimental data for the magnetic moment of $^{218}$At also supports the possible presence of octupole collectivity in the considered nuclei.
- Subjects :
- Physics
Magnetic moment
010308 nuclear & particles physics
Nuclear structure
Charge (physics)
Radius
01 natural sciences
7. Clean energy
Effective nuclear charge
0103 physical sciences
Quadrupole
Physics::Atomic Physics
Atomic physics
Nuclear Experiment
010306 general physics
Spectroscopy
Magnetic dipole
Subjects
Details
- ISSN :
- 24699993 and 24699985
- Volume :
- 99
- Database :
- OpenAIRE
- Journal :
- Physical Review C
- Accession number :
- edsair.doi...........e0262045d3c0fb518f295d2b2c731b75