KL2,3 IONIZATION IN NEON BY ELECTRON-IMPACT IN THE RANGE 1.5-50 KEV - CROSS-SECTIONS AND ALIGNMENT

We have measured the ratio of cross sections σ(KL2,3)/σ(K) for neon for electron impact in the energy range of E0=1.5 ... 50 keV via the intensity of KL2,3-LLL2,3 Auger satellite lines relative to the intensity of KL1L2,3 (3P) diagram line. The experimental ratio decreases over the full range of energy E0 which is contrary to an earlier result by Carlson et al. We have also measured the alignment of KL2,3 1P and3P states via the angular distribution of Auger satellite intensity for the energy range E0=1.5 ... 4 keV, within experimental error we have found a zero alignment. The total K Auger spectrum, measured for E0=40 keV and at the magic angle of emission θ{symbol}=54.7°, has been decomposed into its components by using appropriate line shapes distorted by postcollision interaction. Finally, we discussed whether the lines observed at the high-energy side of KL2,3-LLL2,3 Auger satellite lines can be interpreted as structures caused by an angular momentum exchange in the postcollision interaction predicted by Niehaus and Zwakhals. © 1990 Springer-Verlag.