@article{article_521516, title={Volcanic Rock Reinforced Epoxy Composites for Gamma Ray Shielding}, journal={Avrupa Bilim ve Teknoloji Dergisi}, pages={552–560}, year={2019}, DOI={10.31590/ejosat.521516}, author={Kara, Hasret and Karabul, Yaşar and Kılıç, Mehmet and İçelli, Orhan and Güven Özdemir, Zeynep}, keywords={Epoksi reçine,Volkanik Kaya,Kompozitler,Kütle Zayıflatma Katsayısı,HVL}, abstract={<p class="MsoNormal" style="margin-top:6pt;margin-right:0cm;margin-bottom:6pt;margin-left:0cm;text-align:justify;line-height:normal;"> <span lang="en-us" style="font-size:10pt;font-family:’Times New Roman’, serif;" xml:lang="en-us">In the present study, gamma ray shielding capability of
epoxy resin polymer matrix was tried to enhance with three volcanic rock
powders collected from different regions of Van, Turkey. The chemical contents
of the volcanic rocks were determined by X-ray Fluorescence spectroscopy.  The novel epoxy/volcanic rock composites were
prepared with different volcanic rock contents varying from 0 % wt. to 40% wt. The
gamma ray shielding performances of the
samples were measured experimentally by </span> <span lang="en-us" style="font-size:10pt;font-family:’Times New Roman’, serif;" xml:lang="en-us">NaI(Tl) detector for the photons with of 81 keV and
356 keV energies emitted from Ba-133 point radioactive source. The </span> <span lang="en-us" style="font-size:9pt;" xml:lang="en-us"> </span> <span lang="en-us" style="font-size:10pt;font-family:’Times New Roman’, serif;" xml:lang="en-us">abilities of the samples
to shield gamma radiation were evaluated in terms their mass attenuation
coefficient, half layer value thickness and mean free path distance. It was
determined that the low cost epoxy/volcanic rock  composites have a promising potential to be
utilized as a radiation shielding medium for the gamma rays.  In particular, among all volcanic rock
additives the volcanic rock additive having the highest hematite content gained
the best gamma ray shielding ability to pure epoxy for both photon energies. </span> </p> <p> </p>}, number={15}, publisher={Osman SAĞDIÇ}