J-dependent isotope shifts in the ground term of samarium I

Bauche, J.; Champeau, R J; Sallot, C

doi:10.1088/0022-3700/10/11/007

Cited by 41 publications

(38 citation statements)

References 22 publications

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“…According to the parametric description of the IS [1] the isotope shift A T of an atomic level can be expressed similar to the finestructure energies of the levels: AT~es=d* +cl gl (4f 5d)+c2g2(5d, 6s) -t-C3 g3(af~ 6s)+csazsa (a6D)…”

Section: Discussion Of the Ismentioning

confidence: 99%

“…Whereas the evaluation of the magnetic hfs -because of the hfs anomaly -was carried out separately for each of the two Eu isotopes, the electric hfs constants B 151 were evaluated using the fixed ratio B151/B153=0.393 (3) which is well known from resonance experiments [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. Now, for the parametric analysis of the IS in the whole configuration 4 f 7 5 d 6 s we could take into account the level IS for all 20 levels of the four terms.…”

Section: Investigationsmentioning

confidence: 99%

“…especially the socalled crossed~econd-o__rder (CSO) effects. In the work of Bauche and Champeau [1] these IS effects were described by phenomenotogical parameters whose angular coefficients are equal to those of the corresponding finestructure parameters. For details see [1] and the recently published work of Aufmuth et al [2] in which the theory of the IS is summarized.…”

Section: Introductionmentioning

confidence: 99%

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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: Discussion Of the Ismentioning

confidence: 99%

Section: Investigationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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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“…The nuclear stability valley narrowing for low atomic numbers, there are less possibilities of building the required experimental King plots when approaching the domain of systems for which it is realistic to do highly correlated calculations. Any other way to estimate the field and mass shift contributions separately must contain theoretical inputs [9,10]. In cases where either the field shift (FS) or the mass shift (MS) is a small contribution, the error on the theoretical part is often neglected, although it involves in some cases an unknown systematical error in the data analysis [11].…”

Section: Introductionmentioning

confidence: 99%

Isotope shift on the chlorine electron affinity revisited by an MCHF/CI approach

Carette

Godefroid

2013

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

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Abstract. Today, the electron affinity is experimentally well known for most of the elements and is a useful guideline for developing ab initio computational methods. However, the measurements of isotope shifts on the electron affinity are limited by both resolution and sensitivity. In this context, theory eventually contributes to the knowledge and understanding of atomic structures, even though correlation plays a dominant role in negative ions properties and, particularly, in the calculation of the specific mass shift contribution. The present study solves the longstanding discrepancy between calculated and measured specific mass shifts on the electron affinity of chlorine [Phys. Rev. A 51, 231 (1995)].

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“…Recently, we have reported an experimental evidence of a field contribution to the isotope shift [2] which should be absolutely negligible for such a light atom. The analysis was performed following a parametric description based on King plots [21]. Confirmation of this effect has stimulated our group to extend this investigation to other levels particularly penetrating in the nucleus.…”

Section: -Ha = --(~ § --~-)mentioning

confidence: 99%

Polarization spectroscopy of atomic oxygen by dye and semiconductor diode lasers

Gianfrani¹,

Sasso²,

Tino³

et al. 1991

Nouv Cim D

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Summary. --We used polarization spectroscopy to perform a high-resolution investigation of atomic oxygen in the visible and near-infrared spectral region by means of dye and semiconductor diode lasers. We measured the fine structure of the highly excited 4d5D level and resolved the hyperfine structure of the metastable 3s 5S 2 level of 170. Isotope shift values are also reported for several transitions of the three stable oxygen isotopes (160, 170, 180). Polarization lineshapes are discussed and compared with those obtained in saturation techniques. PACS 35.10.Fk -Fine-and hyperfine-structure constants. PACS 32.30.Jc -Visible and ultraviolet spectra.

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J-dependent isotope shifts in the ground term of samarium I

Cited by 41 publications

References 22 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 on the chlorine electron affinity revisited by an MCHF/CI approach

Polarization spectroscopy of atomic oxygen by dye and semiconductor diode lasers

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