Pages: 28 - 34

Authors: Srpko MARKOVIĆ, Vladan LJUBENOV, and Rodoljub SIMOVIĆ

Abstract

Low-energy photon reflection from water, aluminium, and iron is simulated by the MCNP code and results are compared with similar Monte Carlo calculations. For the energy range from 60 to 150 keV and for the normal incidence of initial photons, a universal shape of the normalized angular differential number albedo is observed and after that fitted by the curve fitting procedure in form of a second order polynomial over the polar angle. Finally, a one-parametar formula for the angular differential number albedo is developed and verified for water through the comparison of results with the semiempirical formulae and Monte Carlo calculations of other authors.

Key words: photon reflection, angle differential number albedo, Monte Carlo method, semiempirical formula

FULL PAPER IN PDF FORMAT (621KB)