Open AccessThe solid angle subtended by a collimated detector and a nuclear fuel assembly
Author(s) -
Georgios Nicolaou
Publication year - 2017
Publication title -
nuclear technology and radiation protection
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.31
H-Index - 16
eISSN - 1452-8185
pISSN - 1451-3994
DOI - 10.2298/ntrp1702136n
Subject(s) - solid angle , collimated light , electromagnetic shielding , monte carlo method , detector , gamma ray , physics , gamma spectroscopy , materials science , nuclear physics , semiconductor detector , optics , laser , statistics , mathematics , quantum mechanics
A Monte Carlo procedure is presented to calculate the solid angle subtended between a HPGe collimated detector and a PWR 17 x 17 fuel assembly. Self-shielding within the assembly is assessed in the case of gamma rays encountered in gamma spectroscopy of spent nuclear fuel. Self-shielding renders a non-uniform 3-D distribution of the radioactivity within the assembly whose extend depends on gamma ray energies of interest. Hence, the solid angle is reduced to an effective one for each of the different energies of interest