Interpretation of Hyperfine Structure in Spectral Terms

Abstract

Interpretation of hyperfine structures in cadmium, bismuth and lanthanum. Term analysis of the hyperfine structure of cadmium indicates, as suggested by Schüler and Brück, that the fine structures of $\lambda \lambda 5086$, 4800 and 4678 are due to isotopes some with an angular momentum 0 and some with an angular momentum $\frac{\frac{1}{2}h}{2\pi }$. This is verified by the fine-structure $\Delta \nu \text{'}\mathrm{s}$ when each level $f$ is assigned a weight $2f+1$. The inverted terms indicate a positively charged nuclear spin.