0000000000846671
AUTHOR
Gerhard Nöldeke
Die relative Isotopenlage des Os186
Using three different samples of Os192, Os190 and Os186 enriched to 98.68%, 95.46%, and 61.27%, respectively, the isotopic shiftsΔν(Os192−Os190) andΔν(Os192−Os186) have been measured in four Os I-lines with a recording Fabry-Perot spectrometer. The relative isotopic position of Os186 has been found to be $$\frac{{\Delta \nu (Os^{192} - Os^{186} )}}{{\Delta \nu (Os^{192} - Os^{190} )}} = 3.52 \pm 0.03.$$
Das Vorzeichen der Hyperfeinstruktur-Aufspaltung des 3d 5 4s 2 6 S 5/2-Grundzustandes des Mn55
Using a double Fabry-Perot interferometer and an atomic-beam light source, the sign of the hyperfine-structure splitting of the 3d 5 4s 2 6 S 5/2 ground state of Mn55 has been determined to be negative. The absolute value of the splitting previously has been measured byWoodgate andMartin.