ISSN:
1434-6079
Schlagwort(e):
21.10.Ft
;
31.20.Ej
;
31.30.GS
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Physik
Notizen:
Abstract The isotope shift in the arc spectrum of hafnium was studied in 10 lines for the isotopes176Hf,178Hf, and180Hf by means of a photoelectric recording Fabry-Perot spectrometer with digital data processing. The observed shifts together with results from an earlier study were analyzed by means of the parametric method. The field shift difference between the terms 5d 3(4 F) 6s 5 F and3 F resulted in 17(2) mK for the isotope pair178,180Hf. This reflects the influence of a second-order effect which is described by the parameterg 2=−4.4(6) mK. The parameterz 5d , displaying the magnitude of spin-dependent effects in the isotope shift of 5d 36s, was found to be 0.8(2) mK for the same isotope pair. The experimental data are compared with results obtained from the non-relativistic Hartree-Fock method. The calculated electron densities describe the experimental field shifts with good accuracy. Hartree-Fock screening ratios for various types of transitions were used to evaluate changes in mean-square nuclear charge radii. The mean value ofλ 178,180≈δ〈r 2〉178,180 equals 0.069(10) fm2.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF01384581
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