J-dependence of the isotope shift in Eu I 4f
75d6s(a
6
D)

Brodzinski, T.; Kronfeldt, H.-D.; Winkler, R.

doi:10.1007/bf01437063

Cited by 9 publications

(6 citation statements)

References 4 publications

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“…the bibliography on experimental optical IS by Heilig [3]). The most extended and detailed studies of CSO-effects in one element were so far carried out in the rare earth element europium: in the two lower lying configurations 4 f 7 6 s 6 p [4] and 4 f 7 5d 6s [5][6][7][8], but also in four high lying configurations 4 f 7 6 s 6 d [9], 4 f 7 6 s 7 s [t0], 4 f v 6s 8s [11], a n d 4 f 7 5d 6p [12]. Of the four terms in the low lying odd configuration 4 f 7 5d 6s, however, only for three terms (a6D, aSD, a~°D) CSOeffects could be determined so far.…”

Section: Introductionmentioning

confidence: 99%

Parametric analysis of the isotope shift and hyperfinestructure in the Eu I configuration 4f 7 5d 6s

Seifert

Weber

Kronfeldt

et al. 1989

Z Phys D - Atoms, Molecules and Clusters

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With doppler-reduced /nter_modulated opto_galvanic _saturation laserspectroscopy (IMOGS) in Eu I the isotope shift (IS) and hyperfine structure (hfs) of the remaining baD term of the configuration 4 f v 5d6s was investigated. With the help of former measurements in our group (a6'l°D) and by other authors (aS'l°D) the IS of the now complete configuration (20 levels) was analysed with wavefunctions by J.-F. Wyart. From the parametric description of the IS resulted the necessity also to include the often neglected small parameter g~ (gl (4f, 5 d)= 9.3 (3) MHz), which is mainly due to the specific mass shift. The IS of all 20 levels can be well described by further crossed-second-order parameters gz(5d, 6 s ) = -4 0 1 ( 5 ) MHz and g3(4f, 6 s ) = -2 7 ( 1 ) MHz and one common J-dependent parameter z5a = 40.4(4.1) M H z . -With effective one-electron parameters a kz, b kt an interpretation of the magnetic and electric hfs (except for a few disturbed levels) could also be carried out.

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Section: Introductionmentioning

confidence: 99%

Parametric analysis of the isotope shift and hyperfinestructure in the Eu I configuration 4f 7 5d 6s

Seifert

Weber

Kronfeldt

et al. 1989

Z Phys D - Atoms, Molecules and Clusters

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“…In the works encountered in the literature, devoted to the isotope shift for a europium atom, CSO parameters for the following configurations were determined: 4f 7 5d6s [13,15,17], 4f 7 6s7s [11], 4f 7 6s8s [14], 4f 7 6s6d and 4f 7 6s6p [16]. On the basis of the results obtained, it was also shown that the ratio between the obtained values of isotope shift parameters and the respective fine structure radial integrals is similar for all configurations.…”

Section: Isotope Shiftmentioning

confidence: 94%

“…The second reason of differentiation of isotope shifts in various levels is configuration mixing. In the case of j -configuration mixing, formula (14) takes the form (15) where ξ j denotes the 'content' of particular configurations in the wavefunction for a particular level. It results from equation (15) that precise determination of parameters g i,j and z nl,j under the interaction of the configurations for configurations strongly differing in the values of d j is a very difficult task.…”

Section: Isotope Shiftmentioning

confidence: 99%

“…In the case of j -configuration mixing, formula (14) takes the form (15) where ξ j denotes the 'content' of particular configurations in the wavefunction for a particular level. It results from equation (15) that precise determination of parameters g i,j and z nl,j under the interaction of the configurations for configurations strongly differing in the values of d j is a very difficult task. The error resulting from an inaccurate determination of intermediate coupling wavefunctions usually considerably exceeds CSO effects.…”

Section: Isotope Shiftmentioning

confidence: 99%

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Isotope shift and hyperfine structure in even configurations of neutral europium

Furmann

Stefańska

2011

J. Phys. B: At. Mol. Opt. Phys.

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Results of the measurements of the isotope shifts, as well as the hyperfine structure constants, are presented concerning electronic levels belonging to the even configurations in a europium atom with energies within the range 28 000-43 000 cm −1 . The data were obtained with the method of laser-induced fluorescence in a hollow-cathode discharge. On the basis of the measurements of 137 spectral lines, the values of isotope shifts and hyperfine structure constants A and B for 69 levels were determined; in the case of 44 levels, these values were obtained for the first time. Relying on the experimental results, the parameters describing the isotope shifts for individual configurations and the crossed second-order effects were calculated. The results obtained were compared to the ab initio estimations.

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“…This metastable levels have already been extensively investigated by laser spectroscopy methods [6][7][8][9].…”

Section: Methodsmentioning

confidence: 99%

Hyperfine structure constants and isotope shift of the levels of the configuration 4f 6 5d 6s 2 in Eu I

Elantkowska

Bernard

Dembczyński

et al. 1993

Z Phys D - Atoms, Molecules and Clusters

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Abstract. The hyperfine structure (hfs) and the isotope shift (IS) of transitions between metastable levels of the configuration 4f 7 5d 6s and levels of the configuration 4 f 6 5d 6s 2 of 151Eu and ~53Eu were studied by means of the high resolution laser-atomic-beam technique. New data for the hfs in 151Eu and 153Eu were obtained as well as new and more accurate for the IS between ~5~Eu and 153Eu. The measured hfs constants A and B of the 4 f 6 5d 6s 2 configuration allow to perform a parametric analysis using the Sandars and Beck theory. The value of the Sternheimer correction is also disscused.

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J-dependence of the isotope shift in Eu I 4f 75d6s(a 6 D)

Cited by 9 publications

References 4 publications

Parametric analysis of the isotope shift and hyperfinestructure in the Eu I configuration 4f 7 5d 6s

Parametric analysis of the isotope shift and hyperfinestructure in the Eu I configuration 4f 7 5d 6s

Isotope shift and hyperfine structure in even configurations of neutral europium

Hyperfine structure constants and isotope shift of the levels of the configuration 4f 6 5d 6s 2 in Eu I

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