2025

P2O5 Katkılı Lityum Alüminyum Silikat (LAS) Cam Sistemlerinin Nükleer Radyasyon Zırhlamasına Etkisi

Bu çalışmada, XCOM veritabanının Windows sürümü olan WinXCom programı kullanılarak LAS (lityum-alüminyum-silikat) Li2O-Al2O3-SiO2 cam örneklerinin zırhlama parametreleri hesaplanmıştır. Kullanılan cam örneklerinde P2O5 konsantrasyonunun artan yüzde oranının zırhlama parametreleri üzerindeki değişim etkisi incelenmiştir. Gama ışını için malzemelerin koruyusu etkisi, malzemelerin zırhlama etkilerini anlamada kilit rol oynayan birkaç farklı zırhlama parametresi yardımıyla yorumlanabilir. µm=μ/ρ ile tanımlanan kütle zayıflama katsayısı, zırhlama parametrelerini hesaplamak için kullanılan en temel katsayıdır. Bu parametreler ortalama serbest yol (MFP), yarı değer katmanı (HVL), onuncu değer katmanı (TVL), etkili elektron numarası (Ne) ve eşdeğer atom numarasıdır (Zeq). Ayrıca maruz kalma faktörü (EBF) ve GP fitleme parametreleri de Li2O-Al2O3-SiO2 cam örnekleri için logaritmik enterpolasyon yöntemi ve Zeq değerinin kullanılması ile hesaplanmıştır. Li2O-Al2O3-SiO2 cam örnekleri için EBF değerleri, Ne ile ters bir ilişki göstermektedir. Ayrıca, P1 cam örneği için EBF değeri maksimum değeri alırken (en az Ne), P6 cam örneği için minimum EBF değeri (en yüksek Ne) hesaplanır. Seçilen camlar için farklı zırhlama parametrelerinde gözlenen değişiklik, madde ile üç etkileşim göz önünde bulundurularak yorumlanmaktadır bu etkileşimler fotoelektrik etki, Compton saçılması ve çift oluşumdur. Elde edilen sonuçlar, kütle zayıflatma katsayısı (µm) değerinin fotonun enerjisine, cam örneklerinin kimyasal bileşimine ve zırhlama malzemelerinin yoğunluğuna bağlı olduğunu göstermektedir. En yüksek P2O5 konsantrasyonuna sahip olan P6 cam numunesinin diğer Li2O-Al2O3-SiO2 cam örnekleri arasından nükleer radyasyon koruma kabiliyeti bakımından en etkili cam numunesi olduğunu açıkça görülmektedir.

Anahtar Kelimeler:

P2O5; gamma zırhlama; EBF.

Effect of P2O5 Additive on Nuclear Radiation Shielding Behaviors of Lithium Aluminum Silicate (LAS) Glass System

In this work, shielding parameters of LAS (lithium-aluminum-silicate) Li2O-Al2O3-SiO2 glass samples have been reported with the help of the WinXCom code, a Windows version of the XCOM database. The effect of increasing P2O5 concentration on the shielding parameters has been examined in the used Li2O-Al2O3-SiO2 glass samples. The shielding effectuality of the materials for gamma-ray can be interpreted with the help of several different attenuation parameters which plays key role in understanding the shielding capabilities of the material. The mass attenuation coefficient, defined by µm=μ/ρ, is the most basic coefficient used to calculate the shielding parameters. These parameters are the mean free path (MFP), half value layer (HVL), tenth value layer (TVL), effective electron number (Ne) and equivalent atomic number (Zeq). The exposure buildup factor (EBF) and GP fitting parameters are also calculated by the method of logarithmic interpolation using Zeq of a Li2O-Al2O3-SiO2 glass system. The EBF values for Li2O-Al2O3-SiO2 glass samples show an inverse relation with Ne. Further, P1 (least Ne) offers maximum values of EBF and P6 (highest Ne) offers minimum EBF values. The change in different shielding parameters for the selected glasses was interpreted by considering three interactions with the substance (Photoelectric effect, Compton scattering and pair production). The obtained results show that the µm strongly depends on the photon energy, chemical composition and density of the shielding materials. It is clear to see that P6 glass sample having the highest P2O5 concentration is the most effective glass sample among the other glasses of Li2O-Al2O3-SiO2 system in nuclear radiation shielding ability.

Keywords:

P2O5; gamma shielding; EBF;,

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