Physics
Scientific paper
Jun 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983zhtfi..53.1101k&link_type=abstract
(Zhurnal Tekhnicheskoi Fiziki, vol. 53, June 1983, p. 1101-1114) Soviet Physics - Technical Physics (ISSN 0038-5662), vol. 28, J
Physics
Absorption Spectra, Emission Spectra, Gas Spectroscopy, X Ray Spectra, Continuous Spectra, Maximum Likelihood Estimates
Scientific paper
A technique for calculating X-ray emission spectra from absorption measurements in a gas is developed and applied experimentally. A Fredholm integral equation is obtained and solved numerically by a maximum-likelihood method which permits quantitative evaluation of the energy resolution of discrete and continuous spectra (e.g., 5 percent for the 275-eV carbon line if 10 to the 6th photons are detected). The method is used with the multifilament H2-filled detector described by Bogomolov and Peskov (1981) to analyze the ultrasoft emission from an X-ray tube and a vacuum-arc cathode spot. Typical spectra are shown, and applications in astrophysics and plasma physics are suggested.
Kosarev E. L.
Peskov V. D.
Podoliak E. R.
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