Measurement of the K-shell photoionization cross section of C IV through the L-shell photoabsorption spectra.

Abstract

The photoabsorption spectrum of the C iv ion has been obtained with the two laser-produced plasma technique. The 1s inner-electron and the 2s and 2p valence-electron absorption spectra have been measured. From the L-shell spectra the value of the line ion density in the 1${\mathit{s}}^{2}$2s and 1${\mathit{s}}^{2}$2p levels has been obtained and the measurement of the total inner-shell photoionization cross section has been derived. The absorption line profiles of the L-shell spectra have also been compared with the theories of line broadening due to the Stark effect.