Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Isotopic abundances and atomic weights of the elements

Journal Article · · J. Phys. Chem. Ref. Data; (United States)
DOI:https://doi.org/10.1063/1.555720· OSTI ID:6163431
A large number of measurements describing the isotopic composition of the elements using a variety of analytical methods have been reported since the discovery of the first isotope in 1912. During the past several decades, however, mass spectrometric methods have been used, almost exclusively, to determine the isotopic composition, and thus the atomic weights, of the elements. This evaluated compilation reports the literature references for all complete mass spectrometric measurements published during the period 1920 through 1983. Also given are the isotopic compositions, the isotope ratios, the atomic weights calculated from the data, the appropriate nuclidic masses and an evaluation of the errors of the measurements. For each polynuclidic element, a best measurement has been selected.
Research Organization:
Central Bureau for Nuclear Measurements, Joint Research Centre, Commission of the European Communities, Geel, Belgium
OSTI ID:
6163431
Journal Information:
J. Phys. Chem. Ref. Data; (United States), Journal Name: J. Phys. Chem. Ref. Data; (United States) Vol. 13:3; ISSN JPCRB
Country of Publication:
United States
Language:
English