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The general expression for excitation cross section of polarized atoms bypolarized electrons is derived by using the methods of the theory of an atomadapted for polarization. The special cases of the general expression for thedescription of the angular distribution and alignment of excited atoms in thecase of polarized and non-polarized atoms as well as the magnetic dichroism ofthe total excitation cross section of polarized atoms are obtained. The crosssections and alignment parameters for the excitation of the autoionizing states2p$^5$3s$^2$ $^2$P$_{3/2}$ for Na and 3p$^5$4s$^2$ $^2$P$_{3/2}$ for K arecalculated in distorted wave with exchange approximation.

A general expression for the excitation cross-section of polarized atoms by polarized electrons