AUTOIONIZATION SPECTRA OF GASES OBSERVED IN THE VACUUM ULTRAVIOLET.
Abstract
This report first gives a brief introduction and survey of the previous work on discrete structure in the ionization continua of atomic gases observed by absorption spectroscopy at photon energies less than about 20 ev (600 A). The discrete structure observed is generally due to autoionization. The spectra of metal vapors such as the alkali and alkaline earths, and of the rare gases, argon, krypton, and xenon will be discussed. After this introduction, recent measurements in this laboratory of the absorption coefficients (cross sections) of the rare gases argon, krypton, and xenon will be discussed. Measurements were obtained down to 600 A with a photoelectric scanning technique using a helium continuum background at a bandwidth of 0.5 A. This bandwidth was sufficient to resolve the earlier members of the intense, diffuse, asymmetrical absorption line series originally found by Beutler between the 2P3/2 ground state and the 2P1/2 excited state of the ion. These measurements will be discussed and compared with other recent theoretical and experimental investigations. Finally, a compilation of references to papers on autoionization spectra arranged according to element and complete up to January 1964 is included. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1964
- Accession Number
- AD0609849
Entities
People
- Robert E. Huffman
Organizations
- Air Force Cambridge Research Laboratories