Research Information System
Lambert Academic Publishing, Hamburg, 2021
Since the
structures of graphene- or carbon-based materials are being the most important ones
of daily life from day to day they are very attractive for researchers. The
richness of various optical and electronic behaviors has made them one of the
rapidly rising materials on the horizon of material science and condensed
matter physics. Having the sheets of atoms that are stacked in a disorganized
manner makes activated carbon being different from other forms of carbon
–graphite- structures. The researches about the shielding properties of graphene and activated carbon atoms for gamma-rays
are very rare and required to be improved. Since the use of radioactive
sources in different fields (nuclear industry, shielding material, radiation
biophysics and space research application, etc.) has been increasing
expeditiously, the photon interactions with matter has gained more importance
in the world of material science technology. In this work, we reviewed
the basics of the impregnated activated carbons (AC1 and
AC2) and graphene, as well as the link between the structural behaviors and
the gamma shielding properties in terms of both quality and efficiency. Both XCom software and EGSnrc simulation code were used to obtain the theoretical calculations that are
significantly important to be able to understand the shielding properties of impregnated
activated carbons (AC1 and AC2) and graphene for gamma-rays. At the end, the
mass attenuation coefficients (µm), the total atomic and the electronic
cross-sections (σt,a and σt,e), the effective atomic
number and the effective electron density (Zeff and Neff),
the half value layer (HVL), the tenth value layer (TVL), and the mean free path
(MFP) values of such materials were calculated and then compared with those of
some other known shielding materials like lead, borosilicate, concrete and
vermiculite. The calculated data showed that impregnated activated
carbons (AC1 and AC2) are very appropriate and consistent to be one of the
candidates for shielding materials of gamma-rays even though the graphene is
seen as inconsistent for this purpose.