Studies on fractionation of ytterbium isotopes in Yb(III)-acetate/Yb- amalgam system. Even-odd effect

摘要

The fractionation of ytterbium isotopes with the even and odd numbers of neutrons was investigated in a Yb(III)-acetate/Yb-amalgam exchange systems. The light isotope was preferentially fractionated to the amalgam phase. The values of the unit separation gain per mass difference,(epsilon), were found to be - 0.00054 for (sup 176/171)Yb and -0.00069 for (sup 176/174)Yb The difference which amounted to 0.00015 is an evidence for the occurrence of the so called 'even-odd' effect. It was also found that the chemical isotope shift of ytterbium was monitored by optical isotope shift its atomic spectra. (author). 23 refs, 7 figs, 4 tabs.