Abstract
We generalize Ericson's theory of fluctuations to deep inelastic reactions. Following Ericson we assume that theS-matrixSβα(E, l) can be written as a sum of pole terms in the complex energy plane, but the dependence ofSβα (E, l) on the angular momentuml is assumed to be coherent. Semi-classical approximations for the summation of the angular momenta lead to a simple formula for the energy autocorrelation function. It contains the average widthΓ(l) describing the lifetimeτ(l) of the intermediate dinuclear system and the numberNeff of unresolved primary channels. These quantities can be determined from a measurement of the autocorrelation function.
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