TITLE:
Improve the Efficiency of Scintillation Detectors Using Reflectors Based on Photonic Crystals Arrays
AUTHORS:
M. F. Eissa, Arafa H. Aly
KEYWORDS:
TMM; Photonic Crystals; Scintillation Detectors; Radiation; Photonic Band Gap
JOURNAL NAME:
Journal of Electromagnetic Analysis and Applications,
Vol.6 No.2,
January
21,
2014
ABSTRACT: In the present work, we designed the new type of photonic
crystals (PCs)
as reflectors. Reflections
from single layer of Al2O3/MgO PC help us in recapturing
the light that does escape from the scintillation surface. Photonic crystals in
one dimension array of Al2O3 and MgO with silver at
periodicities N = 1, 2 and 3 were
used as a reflector around the surface of the scintillation volume.
Scintillation detectors are widely used in nuclear medicine. The efficiency is
an important parameter for characterizing the capability of the detectors. The
counting efficiency of the detectors depends on the light emission induced by
radiation. The light then was converted by the photomultiplier tube into electrical pulses. The
efficiency may increase by an amount of 1.64% if MgO-Ag photonic crystals are used at periodicity N = 1 as a reflector.