Abstract
Hyperfine-structure parameters and isotope shifts for the 795-nm atomic transitions in 217,218,219At 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 218At has been found to be larger than the average of its even-N neighbors, 217,219At. The discrepancy between the additivity-rule prediction and experimental data
for the magnetic moment of 218At also supports the possible presence of octupole collectivity in the considered nuclei.
Details
Original language | English |
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Article number | 054317 |
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Pages (from-to) | 1-9 |
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Number of pages | 9 |
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Journal | Physical Review C |
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Volume | 99 |
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DOIs | |
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Publication status | Published - 14 May 2019 |
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