THEORY OF L-SHELL ION-IMPACT IONIZATION - INCLUSIVE CROSS-SECTIONS AND MULTIPLE-VACANCY (K-SATELLITE) DISTRIBUTIONS
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Our recent contributions to the theory of collisions of ions with target L-shell electrons are reviewed. We consider in particular KL and K2L multiple vacancy distributions. We have generalized from the traditional single-particle model to the independent Fermi particle model, thereby providing the first quantal derivation of the nearly binomial distribution which characterizes the K satellites and hypersatellites. The hole-hole Pauli correlation terms tend to average out because of "random" phases, leaving a nearly classical distribution. Coupled-channels calculations of the mean L-shell vacancy probability per electron, pL, are described. The inclusion of shakeoff contributions to pL, particularly important for hypersatellites, is outlined. New questions raised by the present work are discussed. 1983.