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Isotope shifts of neutron-deficient gold isotopes with 193≧A≧190 (1985)

Streib, J. ; Kluge, H. -J. ; Kremmling, H. ; [weitere]

Springer

The European physical journal 321 (1985), S. 537-547

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ISSN: 1434-601X

Schlagwort(e): 21.10.-k ; 27.80+w ; 31.30.Gs

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract The isotope shift between197Au (stable) and the radioactive Au isotopes190Au,191Au,192Au and193Au were determined by resonance fluorescence spectroscopy in the 6s 2 S 1/2–6p 2 P 1/2.λ=267.6nm line. The unstable Au isotopes were produced at the ISOLDE mass separator at CERN. The nuclei were investigated semi on-line in a resonance vessel, heated to 1,400°C. The results areδν 190,197=−11.12(39) GHz,δν 191,197=−9.67(12) GHz,δν 192,197=−8.32(15) GHz,δν 193,197=−6.29(11) GHz, corresponding to a change of the mean-square charge radius byδ〈r 2〉190,197 =0.261(12) fm2,δ〈r 2〉191,197=0.227(5) fm2,δ〈r 2〉192,197=0.195(5) fm2,δ〈r 2〉193,197 =0.148(4) fm2.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01432427

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Digitale Medien

Isotope shift and hyperfine structure of stable platinum isotopes (1987)

Neu, W. ; Passler, G. ; Sawatzky, G. ; [weitere]

Springer

The European physical journal 7 (1987), S. 193-201

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ISSN: 1434-6079

Schlagwort(e): 31.30.Gs ; 35.10.Fk

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract Isotope shift (IS) and hyperfine structure (hfs) measurements have been performed on seven lines of the platinum I spectrum with interference as well as laser fluorescence spectroscopy. In the latter case a frequency-doubled single-mode cw dye laser was applied. The IS of190Pt with a natural abundance of only 0.01% was determined to beδν 190, 192=−38.65(8) mK in theλ306.47 nm transition. The IS parameters and the effective hfs integrals in the configuration (5d+6s)10 were determined in intermediate coupling by a least squares fit of the IS and hfs data with eigenvectors obtained from the platinum fine structure (fs). The results are compared with theoretical values and yield improvedδ〈r 2〉 data.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01384588

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γgauche effects in the 1H and 13C NMR spectra of steroids (1988)

Hammann, P. E. ; Habermehl, G. G. ; Kluge, H.

Chichester : Wiley-Blackwell

Organic Magnetic Resonance 26 (1988), S. 85-88

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ISSN: 0749-1581

Schlagwort(e): 13C NMR ; 1H NMR ; 12-Substituted-14β-hydroxy steroids ; 14α-Steroids ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: γgauche effects of 12-substituted-14β-hydroxy- and 14α-steroids were studied by 1H and 13C NMR spectroscopy. A linear correlation was found between the 1H chemical shift of 4H-17 and the 13C shift of C-17 for C-12-substituted steroids. This correlation can be explained by steric interactions.

Zusätzliches Material: 4 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/mrc.1260260118

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