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Digitale Medien

Stark effect study of the 4f66s2 7 F 1, 2, 3, 4, 5, 6 levels of samarium using nonlinear level crossing technique (1991)

Rinkleff, R. -H. ; Steudel, A. ; Zeiske, K.

Springer

The European physical journal 18 (1991), S. 101-105

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ISSN: 1434-6079

Schlagwort(e): 32.60.+i ; 32.80.Bx

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract The nonlinear level crossing technique with parallel electric and magnetic fields was used to investigate the Stark effect of six levels of the ground multiplet 4f66s2 7 F in the Sm I-spectrum. The tensor polarizabilities were deduced from the level crossing signals. The variation of the tensor polarizabilities of the levels of the ground multiplet is well reproduced by the LS coupling approximation, which gives an average value of α2(F)=−0.88(6) kHz/(kV/cm)2 for the six measured levels. The experimental results confirm the validity of the central field approximation in the ground configuration of Sm.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01418174

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Digitale Medien

Radiative lifetimes of levels of the configuration 4f 7 (8 S) 6s 6p in Eu I (1987)

Fechner, B. ; Rinkleff, R. -H. ; Steudel, A.

Springer

The European physical journal 6 (1987), S. 31-34

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ISSN: 1434-6079

Schlagwort(e): 32.70.Cs ; 32.70.Fw

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract Radiative lifetimes of the 4f 7 (8 S) 6s 6p z 10 P 7/2, 9/2,z 8 P 5/2, 7/2, 9/2 andz 6 P 7/2, 5/2 levels of Eu I were measured by the time resolved recording of the exponential decay of the fluorescence. Three of them were measured for the first time, the others agree with previous determinations. From the values of the lifetimes absolute oscillator strengths are deduced, taking into account the branching ratios for the transitions to the 4f 7 6s 2 and 4f 7 5d 6s levels. From these absolutef values the radial integralI(6s 2, 6s 6p) was derived by a parametric analysis. Theoretical values of oscillator strengths which were calculated using this radial integral show good agreement with the experimental data.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01436994

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