Second spectrum of Manganese (Mn II), Part II: Revised fine and hyperfine structure analysis of odd-parity levels

International audienceIn the first part of this global work, we have achieved the fine and hyperfine structure (fs and hfs) parametric study of even-parity levels, which confirmed in the whole the well-founded basis of previous analyses. Unfortunately, in the present work devoted to odd-parity levels, some divergences appear. For instance, the three levels w 5 P 3 , w 5 P 2 , w 5 P 1 located respectively at 86898, 86937 and 86961 cm −1 should not belong to the 3d 4 ( 5 D)4s4p configuration, as indicated earlier, but rather to 3d 5 ( 4 P)5p. In the other hand, the levels whose energies are: 88 840, 89 079 and 89 429 cm −1 should belong this time to 3d 4 ( 5 D)4s4p instead of 3d 5 5p, as mentioned previously. Our analysis is strengthened when using experimental hfs data as finger prints, even if the comparison between these experimental hfs data, given in the literature, and our calculated results also shows in numerous cases some notable discrepancies, concerning particularly the sign of the electric quadrupole factor. The main monoelectronic hfs parameter values, extracted from our least square fitting procedure, are: a 3d01 (3d 5 4p) = 17.58 mK, b 3d02 (3d 5 4p) = 10.27 mK, a 3d01 (3d 4 4s4p) = 18.74 mK and a 4s10 (3d 4 4s4p) = 274.9 mK. These parameter values, displayed for the first time, were analyzed and compared with ab-initio calculations. As in the first part, we conclude this work by giving the predicted hfs A and B constants of low-lying levels of these two configurations, whose splitting are not yet measured

Parametric study of hyperfine structure of Zr II even-parity levels

Up to now experimental hyperfine structure (hfs) data of twelve even-parity Zr II levels were given in literature. Recently new hyperfine splitting measurements of eleven other Zr II levels, of the same parity are achieved, applying fast-ion-beam laser-fluorescence spectroscopy. The hfs of these 23 gathered levels has been analysed by simultaneous parametrisation of the one-and two-body interactions, first in model space (4d + 5s)3 and secondly in extended one . For the three lowest configurations, radial parameters of the magnetic dipole A and quadrupole electric B factors are deduced in their entirety for 91ZrII, compared and discussed with calculated values, available in literature and also with ours, computed by means of ab-initio method . For instance we give the main experimental values of the extracted single-electron hfs parameters of 4d25s: a = -2701 MHz, a = -122.4 MHz and b = -113.5 MHz.The accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author

Fine, hyperfine and Zeeman structures of levels of

The hyperfine and Zeeman structures of 14 lines of isotope 123Sb covering the UV-NIR spectral range have been measured. The experimental data have been used in order to reanalyse and revise Sb I energy levels. We named majority of them for the first time since they were previously labelled only by their energy values, without any term designations. In both cases of odd- and even-parity levels we took into consideration up to 7 interacting configurations; the set of fine structure parameters and the leading eigenvector percentages of levels as well as their calculated Landé-factors are given. Semi-empirical hfs parameter values extracted from experimental data were compared with ab initio results computed by the use of Cowan code

Isotope shifts and hyperfine structure in near-ultraviolet transitions of Pb I by doppler-free saturation spectroscopy

Isotope shifts and hyperfine structures have been determined for the three near-ultraviolet transitions 405.8 nm (6s26p2 3P2–6s26p7s 3P1o), 368.3 nm (6s26p2 3P1–6s26p7s 3P0o), and 364.0 nm (6s26p2 3P1–6s26p7s 3P1o) in stable isotopes of Pb i using the technique of saturated absorption spectroscopy in a sputtered vapor. The isotope shifts for these transitions and the magnetic hyperfine interaction constants for the 6s26p2 3P1,2 metastable levels are the first Doppler-free determinations for these systems reported in the literature to our knowledge. Combined with experimental data, previously given in the literature, and pseudorelativistic Hartree-Fock estimates, the field shifts (FS’s) of seven relevant configurations are deduced: FS(6s26p7s)=2461 MHz, FS(6s26p9p)=1838 MHz, FS(6s26p6d)=1820 MHz, FS(6s26p7d)=1668 MHz, FS(6s26p8s)=2132 MHz, FS(6s26p7p)=395 MHz, and FS(6s26p5f )=-461 MHz, referred to 6s26p2. The hyperfine-structure integrals deduced from the experimental A factors for p electrons of the ground configuration 6s26p2 are in good agreement with results of ab initio calculations