Measurements of Ionization Cross Sections of 4d-Electrons in Xenon by Electron Impact

概要

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Partial ionization cross sections for 4d-electrons in xenon by electron impact have been measured by means of a combination of the electron-energy-loss spectroscopy and the Auger electron spectroscopy in the impact energy region from 70 eV to 4 keV. The cross sections increase with the impact energy rapidly from the threshold and display a sharp maximum, whose value is (17.0±3.5)×10^<-18>cm^2, around 120 eV impact energy, revealing an existence of a resonance. The cross sections arise again from a minimum at about 200 eV and exhibit a broad maximum of (14.5±3.0)×10^<-18>cm^2around 500 eV. Absolute scale of the cross section is determined using the generalized oscillator strengths for the 4d-ionization, which are measured by the electron-energy-loss spectroscopy. Relative cross sections are measured as a function of the impact energy using an Auger line assigned to the N_5O_<2,3>O_<2,3>(^1S_0) line. Experimental results are compared with a previous experimental result given by a different procedure and a result of a theoretical calculation.
社団法人日本物理学会の論文
1993-04-15