Accession Number:

AD0661354

Title:

ABSORPTION LINE SERIES AND AUTOIONIZATION RESONANCE STRUCTURE ANALYSIS IN THE ULTRAVIOLET SPECTRUM OF SR I,

Descriptive Note:

Corporate Author:

HARVARD COLL OBSERVATORY CAMBRIDGE MASS

Report Date:

1967-08-01

Pagination or Media Count:

45.0

Abstract:

The absorption spectrum of strontium vapor in the quartz ultraviolet and Schumann region was obtained at good dispersion, leading to extension of the singlet principal series to n33, and discovery of ninety-four lines due to double-electron transitions, most of which are classifiable within six series converging on the Sr II 2D metastable term. Pronounced autoionization resonance effects occur in the Schumann region. A photoelectric spectrometer was used to measure relative absorption cross-sections in the Sr I spectrum, over the region comprising about 22 of the autoionization resonances. The results are unfolded by a computer program into Fano-type or dispersion profiles, and values of line-profile-indices and autoionization damping constants are derived. One additional resonance, not recognizable from the photographic spectrum, is reported. Author

Subject Categories:

  • Astrophysics
  • Atomic and Molecular Physics and Spectroscopy
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE