CERN Accelerating science

Published Articles
Title	Inverse odd-even staggering in nuclear charge radii and possible octupole collectivity in $^{217,218,219}\mathrm{At}$ revealed by in-source laser spectroscopy
Author(s)	Barzakh, A E (St. Petersburg, INP) ; Cubiss, J G (York U., England) ; Andreyev, A N (York U., England ; JAEA, Ibaraki ; CERN) ; Seliverstov, M D (St. Petersburg, INP ; York U., England) ; Andel, B (Comenius U.) ; Antalic, S (Comenius U.) ; Ascher, P (Heidelberg, Max Planck Inst.) ; Atanasov, D (Heidelberg, Max Planck Inst.) ; Beck, D (Darmstadt, GSI) ; Bieroń, J (Jagiellonian U.) ; Blaum, K (Heidelberg, Max Planck Inst.) ; Borgmann, Ch (Heidelberg, Max Planck Inst.) ; Breitenfeldt, M (Leuven U.) ; Capponi, L (West Scotland U.) ; Cocolios, T E (CERN ; Manchester U.) ; Day Goodacre, T (CERN ; Manchester U.) ; Derkx, X (West Scotland U. ; Caen U.) ; De Witte, H (Leuven U.) ; Elseviers, J (Leuven U.) ; Fedorov, D V (St. Petersburg, INP) ; Fedosseev, V N (CERN) ; Fritzsche, S (Helmholtz Inst., Jena ; Jena U., TPI) ; Gaffney, L P (Leuven U.) ; George, S (Heidelberg, Max Planck Inst.) ; Ghys, L (Leuven U. ; SCK-CEN, Mol) ; Heßberger, F P (Darmstadt, GSI ; Helmholtz Inst., Mainz) ; Huyse, M (Leuven U.) ; Imai, N (CERN ; KEK, Tsukuba) ; Kalaninová, Z (Comenius U. ; Dubna, JINR) ; Kisler, D (Heidelberg, Max Planck Inst.) ; Köster, U (Laue-Langevin Inst.) ; Kowalska, M (CERN) ; Kreim, S (Heidelberg, Max Planck Inst. ; CERN) ; Lane, J F W (West Scotland U.) ; Liberati, V (West Scotland U.) ; Lunney, D (CSNSM, Orsay) ; Lynch, K M (CERN ; Manchester U.) ; Manea, V (CERN ; CSNSM, Orsay) ; Marsh, B A (CERN) ; Mitsuoka, S (JAEA, Ibaraki) ; Molkanov, P L (St. Petersburg, INP) ; Nagame, Y (JAEA, Ibaraki) ; Neidherr, D (Darmstadt, GSI) ; Nishio, K (JAEA, Ibaraki) ; Ota, S (JAEA, Ibaraki) ; Pauwels, D (SCK-CEN, Mol) ; Popescu, L (SCK-CEN, Mol) ; Radulov, D (Leuven U.) ; Rapisarda, E (CERN) ; Revill, J P (Liverpool U.) ; Rosenbusch, M (Greifswald U. ; Nishina Ctr., RIKEN) ; Rossel, R E (CERN ; Mainz U.) ; Rothe, S (Mainz U. ; CERN) ; Sandhu, K (West Scotland U.) ; Schweikhard, L (Greifswald U.) ; Sels, S (Leuven U.) ; Truesdale, V L (York U., England) ; Van Beveren, C (Leuven U.) ; Van den Bergh, P (Leuven U.) ; Van Duppen, P (Leuven U.) ; Wakabayashi, Y (JAEA, Ibaraki) ; Wendt, K D A (Mainz U.) ; Wienholtz, F (Greifswald U. ; CERN) ; Whitmore, B W (York U., England) ; Wilson, G L (York U., England) ; Wolf, R N (Heidelberg, Max Planck Inst.) ; Zuber, K (Dresden, Tech. U.)
Publication	2019
Number of pages	9
In:	Phys. Rev. C 99 (2019) 054317
DOI	10.1103/PhysRevC.99.054317
Subject category	Nuclear Physics - Experiment
Accelerator/Facility, Experiment	CERN ISOLDE
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.
Copyright/License	publication: © 2019-2024 authors (License: CC-BY-4.0)

Corresponding record in: Inspire