Xenon: Oscillator strengths and photoionization
Electron energy loss spectra of Xe have been analyzed by means of Fano and Lu's collision theory of spectra. A new and improved set of empirical parameters has been determined,eigenquantum defects, orthogonal transformation matrix, anddipole matrix elements. These data have been used to calculate the autoionized profile and the asymmetry parameterβ of the angular distribution of photoelectrons. The autoionization profile is in agreement with the measurements of Huffman, Tanaka, and Larrabee. In addition, the theory predicts a distinct interference effect betweens andd excitation. The energetic shifting between the measured and calculated asymmetry parameterβ observed previously is removed. Nevertheless, deviations concerning the magnitude ofβ nears state excitation are still left unexplained. They are probably due to insufficient resolution of the photoelectron measurement.