VARIATION OF THE ANGULAR ANISOTROPY IN RESONANT AUGER DECAY ALONG THEMG 2P-]NL EXCITATIONS

Energy- and angle-resolved resonant huger spectra were recorded on the first 12 Mg 2p --> nl resonances. Utilization of a high-resolution mo nochromator has allowed us to selectively excite resonant states which could not be resolved in earlier electron spectrometry measurements. The branching ratios and values of the angular anisotropy parameter be ta were extracted fur all resonances. The measurements provide a first basis for a systematic test of the spectator model for the angular an isotropy. Our experimental values are compared with ab initio multicon figuration Dirac-Fock calculations. The sensitivity of the calculation s to the configuration basis size is discussed in detail.