Isotope shift and nuclear charge radii of barium isotopes

Autor:	Anders Ynnerman, Ann-M Martensson-Pendrill
Rok vydání:	1992
Předmět:	Physics Field (physics) Isotope Stable isotope ratio Kinetic isotope effect Quadrupole Physics::Atomic Physics Atomic physics Condensed Matter Physics Hyperfine structure Atomic and Molecular Physics and Optics Effective nuclear charge Ion
Zdroj:	Journal of Physics B: Atomic, Molecular and Optical Physics. 25:L551-L559
ISSN:	1361-6455 0953-4075
DOI:	10.1088/0953-4075/25/22/001
Popis:	Relativistic coupled-cluster calculations of hyperfine structure and field isotope shift constants for the 6s and 6p states in Ba+ have been performed. Comparison with experimental hyperfine structures shows agreement within a few per cent and the authors assign a similar uncertainty to the electronic factor for the field shift: F(6s to 6p32/)=-4.20 (13) GHz fm-2. This value, which is about 18% smaller than semi-empirical estimates used in earlier works, has been used to extract revised values for the changes delta (r2) in nuclear charge radii using optical isotope shifts for 122-148Ba and muonic results for the stable isotopes 134-138Ba. Also the factor B/Q, relating the observed quadrupole hyper-fine structure to the nuclear quadrupole moment, was calculated, giving B/Q=374 (4) MHz b-1.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::027ab1a0417db1ab080b109bfd81f6a1 https://doi.org/10.1088/0953-4075/25/22/001 Zobrazit plný text záznamu