Craig J. Sansonetti and Kenneth L. Andrew, "Spectrum and energy levels of singly ionized cesium: I. Revision and extension of the Cs ii energy levels," J. Opt. Soc. Am. B 3, 386-397 (1986)
The experimentally determined energy levels of Cs ii have been revised and extended based entirely on recent observations of the spectrum. Most observed lines have been classified as transitions between 118 even and 167 odd energy levels. Of these 285 levels, 233 have not been previously reported. All the levels have been assigned designations in the jK coupling notation based on theoretical interpretation of the structure and empirical factors. Hyperfine splitting constants are given for 167 levels. By fitting polarization and extended Ritz formulas to selected Rydberg series, the Cs ii ionization energy has been determined to be 186 777.4(5) cm−1.
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All level values and uncertainties are given with respect to the reference level 5p58p 3/2[1/2]0, which was assumed to have a fixed value and zero uncertainty for the purpose of the level optimization.
Experimental value of the magnetic-dipole hyperfine splitting factor.
Except as otherwise noted, all levels were newly located in this work. The comments that apply to individual levels are as follows:
All level values and uncertainties are given with respect to the reference level 5p58p 3/2[1/2]0, which was assumed to have a fixed value and zero uncertainty for the purpose of the level optimization.
Experimental value of the magnetic-dipole hyperfine splitting factor.
Except as otherwise noted, all levels were newly located in this work. The comments that apply to individual levels are as follows:
Table 3
Calculation of the Cs ii 5p5(2P3/2)nl Series Limit
All level values and uncertainties are given with respect to the reference level 5p58p 3/2[1/2]0, which was assumed to have a fixed value and zero uncertainty for the purpose of the level optimization.
Experimental value of the magnetic-dipole hyperfine splitting factor.
Except as otherwise noted, all levels were newly located in this work. The comments that apply to individual levels are as follows:
All level values and uncertainties are given with respect to the reference level 5p58p 3/2[1/2]0, which was assumed to have a fixed value and zero uncertainty for the purpose of the level optimization.
Experimental value of the magnetic-dipole hyperfine splitting factor.
Except as otherwise noted, all levels were newly located in this work. The comments that apply to individual levels are as follows:
Table 3
Calculation of the Cs ii 5p5(2P3/2)nl Series Limit