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Wyświetlanie 1-4 z 4
Tytuł:
Determination of Radiation Attenuation Coefficients of Concretes in Different Densities
Autorzy:
Akkurt, İ.
Günoğlu, K.
Başyiğit, C.
Akkaş, A.
Powiązania:
https://bibliotekanauki.pl/articles/1399938.pdf
Data publikacji:
2013-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
29.30.Kv
34.50.Bw
Opis:
The density of the concrete is important parameter for different properties. Using different types and rates of aggregates cause different densities of the concretes. Radiation shielding properties can be varied with the density and it is important to obtain optimum density for this purpose. In this study radiation attenuation coefficients were measured by comparison of five different densities of concrete that called lightweight, semi-lightweight, ordinary and semi-heavyweight and heavyweight. For this purpose concretes were produced with suitable aggregate in laboratory conditions and determined some physical and mechanical properties. The total linear attenuation coefficient measurements have been obtained by a collimated beam of gamma ray from sources ^{60}Co.
Źródło:
Acta Physica Polonica A; 2013, 123, 2; 374-375
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cement Paste as a Radiation Shielding Material
Autorzy:
Akkurt, İ.
Günoğlu, K.
Başyiğit, C.
Kılınçarslan, Ş.
Akkaş, A.
Powiązania:
https://bibliotekanauki.pl/articles/1399879.pdf
Data publikacji:
2013-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
29.30.Kv
34.50.Bw
Opis:
Cement, mainly, natural limestone and clay mixture after being heated at high temperature is obtained by milling and it is defined as a hydraulic binder material. Especially, cement is used in production concrete. The photon attenuation coefficient (μ, $cm^{-1}$) for cement paste has been measured using gamma spectrometer containing NaI(Tl) detector and MCA at 835, 1173, and 1332 keV. Cement paste was prepared with types of Portland cement which is CEM I 52,5 R- and CEN reference sand has been used according to TS EN 196-1 standard. The mass attenuation coefficients have been calculated at photon energies of 1 keV to 100 GeV using XCOM and the obtained results were compared with the measurements at 835, 1173, and 1332 keV.
Źródło:
Acta Physica Polonica A; 2013, 123, 2; 341-342
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Radioactivity Measurement on Dental Resin Composites
Autorzy:
Akkurt, İ.
Ermiş, R.
Baş, P.
Günoğlu, K.
Powiązania:
https://bibliotekanauki.pl/articles/1402383.pdf
Data publikacji:
2015-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
29.30.Kv
29.40.Mc
98.70.Vc
Opis:
Radioactivity is mainly due to natural ones from earth and also from outside of the atmosphere so-called cosmic radiation. Although radiation sources and their dose effect on humans are known, there is still some conflict on their health effect especially on dental restoration. The limited data for radioactive dental materials and their potential risks for patient makes those materials interesting to be investigated. For this purposes, uranium, thorium and potassium activity have been measured in some dental restorative materials, such as resin composites containing silica and zirconia particles as filler loading, using gamma spectrometer system with NaI(Tl) detector.
Źródło:
Acta Physica Polonica A; 2015, 128, 2B; B-34-B-36
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Production of Barite and Boroncarbide Doped Radiation Shielding Polymer Composite Panels
Autorzy:
Evcin, O.
Evcin, A.
Bezir, N.
Akkurt, İ.
Günoğlu, K.
Ersoy, B.
Powiązania:
https://bibliotekanauki.pl/articles/1031261.pdf
Data publikacji:
2017-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.50.Gi
94.10.Gb
28.41.Te
78.66.Sq
29.30.Kv
Opis:
Developments in nuclear technology in the last century have lead to the use of radiation in different areas of human activity. These are not just the energetics but also food, agriculture, medicine, industry and science. Thus, radiation has become an inevitable phenomenon in our lives. Since we cannot isolate radiation from our life, the radiation protection methods should be available. As alternatives to conventional radiation prevention methods, such as lead and heavy concrete shielding, more functional materials need to become the focus of research. The development of the least harmful to the environment, easily applicable, flexible radiation shields has become very important. In this study, silicon matrix composite panels, doped with different ratios of barite and boron carbide, were produced and characterized by optical and scanning electron microscopy (SEM). Gamma and neutron radiation shielding properties of these materials were investigated. The results have been compared with the lead as the standard shielding material.
Źródło:
Acta Physica Polonica A; 2017, 132, 3; 1145-1148
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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