Abstract
A mass-spectrographic study of the isotopic constitution of Sr, Ba, Bi, and Tl has been made. Although the sensitivity and resolving power of the apparatus were sufficient to detect extremely rare isotopes, no new ones were found. Relative abundances of the isotopes of Sr, Ba, and Tl were determined. It was possible to show that if ${\mathrm{Hg}}^{203}$ exists it must be with an abundance less than one-tenth of that at one time assigned to it by Aston.
Keywords
Affiliated Institutions
Related Publications
Absolute isotopic abundance ratios and the atomic weight of a reference sample of potassium
Solid sample, thermal ionization, mass spectrometry has been used to obtain absolute values for the isotopic abundance ratios of a reference sample of potassium. Standards of kn...
A Redetermination of the Relative Abundances of the Isotopes of Carbon, Nitrogen, Oxygen, Argon, and Potassium
Essentially pure samples of ${\mathrm{A}}^{36}$ and ${\mathrm{A}}^{40}$ have been produced by thermal diffusion and used for the preparation of synthetic argon isotope mixtures ...
Absolute isotopic abundance ratio and atomic weight of terrestrial rubidium
An absolute value hsas been obtained for the isotopic abundance ratio of terrestrial rubidium, using solid-sample thermal ionization mass spectrometry. Samples of known isotopic...
Absolute isotopic abundance ratios and the atomic weight of a reference sample of chromium
Absolute values have been obtained for the isotopic abundance ratios of a reference sample of chromium, using surface emission mass spectrometry. Samples of known isotopic compo...
Global climate change and North American mammalian evolution
We compare refined data sets for Atlantic benthic foraminiferal oxygen isotope ratios and for North American mammalian diversity, faunal turnover, and body mass distributions. E...
Publication Info
- Year
- 1938
- Type
- article
- Volume
- 54
- Issue
- 4
- Pages
- 275-278
- Citations
- 274
- Access
- Closed
External Links
Social Impact
Social media, news, blog, policy document mentions
Citation Metrics
Cite This
Identifiers
- DOI
- 10.1103/physrev.54.275