| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9818066 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2005 | 4 Pages |
Abstract
The total autoionization cross-section of potassium has been studied as a function of incident electron energy over the range from the lowest autoionization threshold at 18.72 eV to 24.4 eV and at an energy resolution of 0.25 eV. The cross-section has been obtained by determining the normalized total intensities of ejected-electron spectra accurately measured at the magic angle of 54.7°. The structure observed in the autoionization function has been assigned to the negative-ion resonances based upon the lowest autoionizing configurations 3p54s2 and 3p53d4s. The quartet levels from the 3p53d4s configuration give the bulk of the autoionization contribution in the single ionization cross-section in the energy range 20.5-24.4 eV. Comparison of the present results with earlier available experimental and theoretical results is presented.
Related Topics
Physical Sciences and Engineering
Materials Science
Surfaces, Coatings and Films
Authors
M.J. Evrij, A.A. Jr., L.L. Shimon, J.E. Kontros, A.A. Borovik,