CLAD EFFECTS IN CALCULATIONS OF THE DANCOFF CORRECTION

The clad effects in Dancoff correction calculations are analyzed consi dering the general procedure of separating the clad region contributio n in a correction factor This factor relates the Dancoff correction C- 3R, calculated assuming the clad region as a void, and the Dancoff cor rection C-4R, calculated treating the clad region explicitly. The clad correction factor is physically interpreted as a transmission probabi lity, and this interpretation leads to an understanding of the limits of the approximations in the described procedures. An expression for t he clad correction factor calculated without any simplification, as, e .g., variable separation is also presented.