Accession Number : ADD095131

Title :   Natural Widths of Atomic K and L Levels, K Alpha X-Ray Lines and Several KLL Auger Lines,

Corporate Author : NATIONAL STANDARD REFERENCE DATA SYSTEM

Personal Author(s) : Krause, M O ; Oliver, J H

Report Date : Jan 1979

Pagination or Media Count : 14

Abstract : In the preceding paper (1) we presented an evaluation of fluorescence, Coster-Kronig and Auger yields for K and L shells. That evaluation utilized experimental and theoretical data up to October 1977 and led to sets of values that are internally consistent and are compatible with all relevant information. It is possible to use these fluorescence yield values, in conjunction with theoretical radiative rates, to derive reliable simi-empirical values of natural widths of K and L levels and, from these, natural widths of K alpha x-ray lines and KLL Auger lines. Such values are of importance in many areas of basic and applied science, most notably in the various branches of electron and x-ray spectrometry. Level and line widths presented in this paper are natural atomic widths. In principle, natural widths are smaller than the actual widths observable in an experiment, because several effects, especially multiplet splitting and multiple ionization, may broaden a level or an emission line. However, these broadening effects are in general small, except for light elements, and will be discussed in some detail in section 5.

Descriptors :   *ATOMIC ENERGY LEVELS, *EMISSION SPECTRA, *SPECTRAL LINES, ATOMIC SPECTRA, LINE SPECTRA, WIDTH, AUGER ELECTRON SPECTROSCOPY, X RAY SPECTROSCOPY, FLUORESCENCE, COLLISION BROADENING, LIGHT TRANSMISSION, RATES, SPLITTING, IONIZATION, TABLES(DATA)

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE