Bizmut Oksit'in Gama Işını Koruma Parametrelerindeki Değişime Kurşun Oksit Etkisi

Bu çalışmanın amacı, bizmut oksidin (Bi2O3) gama ışını radyasyonu absorpsiyon özelliklerini araştırmak ve kurşun oksit (PbO) katkısının Bi2O3'ün zırhlamadaki etkisini belirlemektir. Bu nedenle Bi2O3, PbO ve %50 Bi2O3-%50 PbO. için kütle zayıflama katsayısı (MAC), doğrusal zayıflama katsayısı (LAC), yarı değer katmanı (HVL), onuncu değer katmanı (TVL) ve ortalama serbest yol (mfp) gibi radyasyon absorpsiyon parametreleri teorik olarak hesaplanmıştır. Tüm parametre sonuçları, 511 keV, 662 keV, 1173 keV, 1274 keV ve 1332 keV enerji aralığında GATE/Geant4 (Geant4 Application for Tomographic Emission) simülasyon kodu kullanılarak elde edilmiştir. Ayrıca XCOM programı kullanılarak 1 keV ile 1 GeV enerji aralığında gama ışını absorpsiyon parametreleri hesaplanmıştır. Böylece, simüle edilmiş GATE/Geant4 sonuçlarının doğruluğu XCOM programı kullanılarak test edilmiştir. Diğer yandan zırhlama malzemelerinin tüm parametrelerinin teorik olarak hesaplanan değerleri birbirleri ile karşılaştırılmıştır. Bu sonuçlar, GATE/Geant4 sonuçlarının XCOM sonuçlarıyla iyi bir uyum içinde olduğunu göstermektedir.

Anahtar Kelimeler:

XCOM, GATE, Bi2O3, PbO, Radiation Shielding

The Effect of Lead Oxide on the Change in Gamma Ray Protection Parameters of Bismuth Oxide

The aim of this study is to investigate the gamma ray radiation absorption properties of bismuth oxide (Bi2O3), and determine the effect of lead oxide (PbO) additive in the shielding of Bi2O3. For this reason, the radiation absorption parameters such as mass attenuation coefficient (MAC), linear attenuation coefficient (LAC), half value layer (HVL), tenth value layer (TVL) and mean free path (mfp) were calculated theoretically for the Bi2O3, PbO, and 50% Bi2O3-50%PbO. The all parameters results were obtained by using the GATE/Geant4 (Geant4 Application for Tomographic Emission) simulation code in energy range 511 keV, 662 keV, 1173 keV, 1274 keV, and 1332 keV. Also, the gamma ray protection parameters were calculated by using the XCOM program in the energy range from 1 keV to 1 GeV. Thus, the simulated the GATE/Geant4 results were tested for correctness using the XCOM program. On the other hand, theoretically were calculated values of all parameters of the shielding materials were compared with each other. These results indicate that the GATE/Geant4 results were in good agreement with the XCOM results.

Keywords:

XCOM, GATE, Bi2O3, PbO, Radiation Shielding,

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