MASS SPECTROGRAPHY FOR THE ANALYSIS OF SOLIDS. (I) DETERMINATION OF THE ISOTOPIC ABUNDANCE RATIO OF 13C ENRICHED CARBON FILMS.
Abstract
The abundance ratio of 13C enriched carbon films was determined by means of the Mattauch-Herzog type mass spectrograph. Electrodes of type C(Au)/(Pt) for the vacuum spark ion source were mounted. Platinum isotope mass spectra on the same photographic plate were used to find the characteristic curve of the plate. The mean values of the 13C isotope ratio of the carbon films were ascertained by mass spectrography. And the 13C isotope ratio of methane, the raw material of the carbon film, was obtained by mass spectrometry. These isotope ratios were found in good agreement with eact other. Reproducibility and accuracy of the measurements, errors due to the photographic plate, variation of the line width and the intensity of the CH5 plus ion were discussed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1966
- Accession Number
- AD0804500
Entities
People
- Kumasaburo Kodera
- Tutomu Makita
Organizations
- Emmanuel College