Pages: 44 -47

Authors: Srpko MARKOVIĆ, Vladan LJUBENOV, Rodoljub SIMOVIĆ

Abstract

The total number albedo and average cosine of the polar angle for water and initial photon energy range from 20 keV to 100 keV are presented in this paper. A water shield in the form of a thick, homogenous plate and perpendicular incidence of the monoenergetic photon beam are assumed. The results were obtained through Monte Carlo simulations of photon reflection by means of the MCNP computer code. Calculated values for the total number albedo were compared with data previously published and good agreement was confirmed. The dependence of the average cosine of the polar angle on energy is studied in detail. It has been found that the total average cosine of the polar angle has values in the narrow interval of 0.66-0.67, approximately corresponding to the reflection angle of 48°, and that it does not depend on the initial photon energy.

Key words: photon reflection, total number albedo, average cosine of polar angle, total average
cosine of polar angle, Monte Carlo simulation, MCNP code, water

FULL PAPER IN PDF FORMAT (221 KB)