Analysis of thick-target x-ray yields

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Abstract
The problem of extraction of cross-section information from thick-target x-ray yields is considered for the case of heavy projectiles having internal states. In particular, an analysis is carried out for the situation in which the projectile must carry an inner-shell vacancy into the collision in order to produce excitation of the target atom. It is found that the usual thick-target yield analysis, involving one derivative of the yield with respect to incident projectile energy, does not apply in this case. Explicit expressions are derived for obtaining cross-section information from the yield data.