Meryem YILMAZ, İlhami ERKOYUNCU, Hatice Gürel ÖZDEMİR, İskender DEMİRKOL, Mustafa Recep KAÇAL, Ferdi AKMAN

Bizmut Tabanlı Bazı Alaşımların Radyasyon Zırhlama Kapasitelerinin İncelenmesi

Sunulan çalışmada, 0.060 MeV ila 2.614 MeV foton enerjileri aralığında 18 farklı enerjide bizmut tabanlı bazı alaşımların gama radyasyonu zırhlama kapasiteleri incelenmiştir. Farklı oranlarda bizmut içeren Bi50/Pb25/Cd12.5/Sn12.5, Bi50/Pb28/Sn22, Bi55.5/Pb44.5, Bi58/Sn42 alaşımlarının gama radyasyonu azaltma kapasiteleri belirtilen enerjilerde WinXCOM programı, GEANT4 ve FLUKA simülasyon programları yardımı ile incelenmiştir. Gama radyasyonu zırhlama özelliklerini incelemek için BiPbCdSn, BiPbSn, BiPb ve BiSn olarak kodlanan alaşımların kütle ve lineer azaltma katsayıları, yarı ve onda-bir kalınlık değerleri, ortalama serbest yolları ve etkin atom numaraları parametreleri belirtilen enerji aralığında hesaplanmıştır. µ/ρ değerlerinin düşük enerjilerde daha yüksek olduğu görülmüştür ve WinXCOM’a göre BiPbCdSn, BiPbSn, BiPb ve BiSn için 0.060 MeV enerjideki µ/ρ değerleri sırasıyla 5.4663, 5.4392, 5.1380 ve 5.7924 şeklindedir. BiPb kodlu alaşımın çalışılan diğer alaşımlara göre gama radyasyonu zırhlama kapasitesinin daha iyi olduğu gözlemlenmiştir.

Anahtar Kelimeler:

FLUKA, Gama radyasyonu, GEANT4, WinXCOM, Zırhlama

Investigation of Radiation Shielding Capacities of Some Bismuth-Based Alloys

In the present study, gamma radiation shielding capacities of some bismuth-based alloys in the photon energies range of 0.060 MeV to 2.614 MeV at 18 different energies were investigated. Gamma radiation attenuation capacities of Bi50/Pb25/Cd12.5/Sn12.5, Bi50/Pb28/Sn22, Bi55.5/Pb44.5, Bi58/Sn42 alloys containing different amounts of bismuth were investigated with the help of WinXCOM program, GEANT4 and FLUKA simulation programs at the specified energies. In order to investigate the gamma radiation shielding properties, the mass and linear attenuation coefficients, half and tenth value layers, mean free paths and effective atomic numbers parameters of the alloys coded as BiPbCdSn, BiPbSn, BiPb and BiSn were calculated in the specified energy range. µ/ρ values were found to be higher at low energies and according to WinXCOM, µ/ρ values at 0.060 MeV energies for BiPbCdSn, BiPbSn, BiPb and BiSn are 5.4663, 5.4392, 5.1380 and 5.7924, respectively. It has been observed that the gamma radiation shielding capacity of the BiPb coded alloy is better than the other studied alloys.

Keywords:

FLUKA, Gamma radiation, GEANT4, Shielding, WinXCOM,

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