THE IMPROVED POLYNOMIAL REPRESENTATION FOR DELTASHAPED SCATTERING INDICATRICES
A.D. Gadzhiev, S.B. Serov VANT. Ser.: Mat. Mod. Fiz. Rroc 1990. Вып.1. С. 3234.
Basing on the improved polynomial representation for the σfunction, the improved P_{N}approximation is constructed for highstretched scattering indicatrices. This problem arises when solving the transport equation with highly anisotropic particle scattering. The improved polynomial representation has a number of advantages over the traditional P_{N}approximation, the major of them is the positivity property. The paper presents formulas of the improved P_{N}approximation for σshaped indicatrices. The P_{N}approximation is graphically compared with the improved polynomial approximation for the σfunction.
