2017
DOI: 10.12693/aphyspola.132.1203
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Investigation of Buildup Factor in Gamma-Ray Measurement

Abstract: Gamma ray measurement is an important issue in nuclear technology, since it is widely used in industry, medicine, agriculture, education research, and some military applications. Gamma ray is also needed to build radiation protection, which is very useful for human health. When gamma radiation penetrates through shielding material, it generates two radiation components within or beyond the shield, namely: the uncollided and the collided photons. Therefore, the buildup factor is an important parameter for gamma… Show more

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Cited by 12 publications
(8 citation statements)
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“…The X-ray shielding enhancement in the multi-layered samples could have been because the multi-layered samples had thinner Bi 2 O 3 /NR layers (2.0–5.0 mm) than the single-layered one (10.0 mm), resulting in lower values of build-up factors (B) and subsequently transmitted X-rays (I), as shown in Equation (6). Notably, the build-up factor (B), defined as the fraction of the total dose over the un-scattered dose, depends on two main factors, namely the X-ray energy (E) and the material thickness (x), as shown in Equation (7) [ 53 , 54 ]: where B 1 and B 2 are the energy-dependent fitting parameters. As depicted in Equation (7), the thicker layer of the single-layered Bi 2 O 3 /NR composites in sample-A would have a higher B value that resulted in a larger number of transmitted X-rays (I) and subsequently of the measured µ.…”
Section: Resultsmentioning
confidence: 99%
“…The X-ray shielding enhancement in the multi-layered samples could have been because the multi-layered samples had thinner Bi 2 O 3 /NR layers (2.0–5.0 mm) than the single-layered one (10.0 mm), resulting in lower values of build-up factors (B) and subsequently transmitted X-rays (I), as shown in Equation (6). Notably, the build-up factor (B), defined as the fraction of the total dose over the un-scattered dose, depends on two main factors, namely the X-ray energy (E) and the material thickness (x), as shown in Equation (7) [ 53 , 54 ]: where B 1 and B 2 are the energy-dependent fitting parameters. As depicted in Equation (7), the thicker layer of the single-layered Bi 2 O 3 /NR composites in sample-A would have a higher B value that resulted in a larger number of transmitted X-rays (I) and subsequently of the measured µ.…”
Section: Resultsmentioning
confidence: 99%
“…In the gamma ray matter interaction either a large energy transfer or even complete absorption of the incident gamma rays may occur. The linear attenuation coefficients can be obtained comparing I and Io as shown in equation 1 [9]:…”
Section: Figure 1 the Processes Of Gamma Emission [3]mentioning
confidence: 99%
“…Buildup factor relies on linear attenuation, photon energy and shield thickness. Thus, it is important for gamma ray measurement (Akyildirim et al, 2017). Buildup factor can be defined as the ratio of the total radiation quantity at a given point to the number uncollided photons (Sharaf and Saleh, 2015).…”
Section: Theorymentioning
confidence: 99%
“…It is invaluable in many applied fields of science, such as nuclear medicine and diagnostics, radiation protection and dosimetry (Marashdeh et al, 2015), as well as industrial fields (Gökçe, 2019). Moreover, buildup factor is important for calculating absorbed dose, radiation shielding and protection, and has been investigated by many research groups (Akyildirim et al, 2017, Obaid et al, 2018, Sharaf and Saleh, 2015.…”
Section: Introductionmentioning
confidence: 99%