An Investigation on Effective Atomic Numbers and Mass Attenuation Coefficients of Some Bioactive Glasses

Year 2019, Issue: 15, 168 - 175, 31.03.2019

Özge Kılıçoğlu

https://doi.org/10.31590/ejosat.517731

Cited By: 1

Abstract

A bioactive material is known as a natural or man-made material that prompts a specific biological response from the body such as bonding to tissue. They have numerous applications in the repair and reconstruction of diseased and damaged tissue, and tissue and hard tissue (bone) re-engineering. In this study, we have evaluated the same gamma-ray shielding parameters such as mass attenuation coefficient (μ/ρ), effective atomic number (Zeff), half value layer (HVL), mean free path (MFP) for selected bioactive glasses. The shielding effectiveness of the selected glasses is found comparable each other. Effective atomic number (Zeff) is convenient parameters used to characterize the radiation response of a multi-element material in the technical and industrial applications, radiation shielding design, absorbed dose. Thus, it is very significant to choose accurate method to determine this parameter unambiguously. In the present study, effective atomic number of different type of material has been calculated by using calculation method for total photon interaction in the energy region of 1 keV to 100 GeV. The results obtained from this study show that effective atomic number depends strongly on the chemical composition of the interaction material in the lower as well as higher energy region, but in the intermediate energy region, the chemical composition dependence becomes very weak. This result can be interpreted that an increase in P2O5 content in the composition of bioactive glasses results as an in increase of bioactivity of that particular materials. Therefore, this study underlines the finding that bioactive glasses would be potential biomaterials for biomedical applications. 

Keywords

Bioactive Glasses, Mass Atenuation Coefficient, Effective Atomic Number, Radiation Shielding

Biyoaktif Camların Etkin Atom Numaraları ve Kütle Azaltma Katsayıları Üzerine Bir Araştırma

Abstract

Biyoaktif bir malzeme, vücuttan dokuya bağlanma gibi belirli bir biyolojik yanıt sağlayan doğal veya insan yapımı bir materyal olarak bilinir. Hastalıklı ve hasarlı dokuların onarımı ve rekonstrüksiyonunda ve doku ve sert doku (kemik) yeniden yapılanmasında sayısız uygulamaları vardır. Bu çalışmada, seçilen biyoaktif camlar için kütle azaltma katsayısı (μ / ρ), etkin atom numarası (Zeff), yarı değer kalınlığı (HVL) ve ortalama serbest yol (MFP) gibi gama ışını zırhlama parametrelerini değerlendirdik. Seçilen camların zırhlama etkileri birbirleriyle karşılaştırılabilir. Etkin atom numarası (Zeff), çok elementli bir malzemenin teknik ve endüstriyel uygulamalarını, radyasyon tepkisini, radyasyon zırhlama tasarımını, emilen dozun miktarını tespit etmek için kullanılan uygun bir parametredir. Bu nedenle, bu parametreyi kesin olarak belirlemek için doğru yöntemi seçmek çok önemlidir. Bu çalışmada, 1 keV ile 100 GeV enerji bölgesinde toplam foton etkileşimi için hesaplama yöntemi kullanılarak farklı tipte malzemelerin etkili atom numarası hesaplanmıştır. Bu çalışmadan elde edilen sonuçlar, etkin atom numarasının, düşük ve daha yüksek enerji bölgesindeki etkileşimli malzemenin kimyasal bileşimine güçlü bir şekilde bağlı olduğunu, ancak orta enerji bölgesinde, kimyasal bileşim bağımlılığının çok zayıflaştığını göstermektedir. Bu sonuç, biyoaktif camların bileşiminde P2O5 içeriğindeki bir artışın malzemelerin biyoaktivitesinin artmasıyla sonuçlandığı şeklinde yorumlanabilir. Bu nedenle, bu çalışma biyoaktif camların biyomedikal uygulamalar için potansiyel biyomalzemeler olacağını ortaya koymaktadır.

Keywords

Biyoaktif Camlar, Kütle Azaltma Katsayısı, Etkin Atom Numarası, Radyasyon Zırhlama

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