Inverse odd-even staggering in nuclear charge radii and possible octupole collectivity in $^{217,218,219}\mathrm{At}$ revealed by in-source laser spectroscopy - INSPIRE

Inverse odd-even staggering in nuclear charge radii and possible octupole collectivity in $^{217,218,219}\mathrm{At}$ revealed by in-source laser spectroscopy

A.E. Barzakh
(
- St. Petersburg, INP
)
,
J.G. Cubiss
(
- York U., England
)
,
A.N. Andreyev
(
- York U., England and
- JAEA, Ibaraki and
- CERN
)
,
M.D. Seliverstov
(
- St. Petersburg, INP and
- York U., England
)
,
B. Andel
(
- Comenius U.
)

May 14, 2019

9 pages

Published in:

Phys.Rev.C 99 (2019) 5, 054317

Published: May 14, 2019

DOI:

10.1103/PhysRevC.99.054317

Experiments:

CERN-ISOLDE

View in:

reference search13 citations

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Abstract: (APS)

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.

Nuclear Structure

References(67)

Figures(0)

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