Effective atomic number and electron density of amino acids within the energy range of 0.122–1.330 MeV

More, Chaitali V.; Lokhande, Rajkumar M.; Pawar, Pravina P.

doi:10.1016/j.radphyschem.2016.02.024

Cited by 57 publications

(11 citation statements)

References 21 publications

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“…A parallel beam of mono-energetic gamma-ray photons is attenuated in the matter according to the Lambert–Beer law, where I 0 and I are the un-attenuated and attenuated photon intensities respectively, t (cm) is the sample thickness, μ (cm −1 ) is the linear attenuation coefficient, and ρ (g/cm 3 ) is a measured density of the sample (More et al 2016 ).…”

Section: Physical and Radiation Shielding Propertiesmentioning

confidence: 99%

Polymeric composite materials for radiation shielding: a review

et al. 2021

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The rising use of radioactive elements is increasing radioactive pollution and calling for advanced materials to protect individuals. For instance, polymers are promising due to their mechanical, electrical, thermal, and multifunctional properties. Moreover, composites made of polymers and high atomic number fillers should allow to obtain material with low-weight, good flexibility, and good processability. Here we review the synthesis of polymer materials for radiation protection, with focus on the role of the nanofillers. We discuss the effectivness of polymeric materials for the absorption of fast neutrons. We also present the recycling of polymers into composites.

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Section: Physical and Radiation Shielding Propertiesmentioning

confidence: 99%

Polymeric composite materials for radiation shielding: a review

et al. 2021

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“…For example, Kurudirek (2016) investigated the values of Z eff and N el in selected biological materials based on different photon energies. More, Lokhande, and Pawar (2016) obtained the values of Z eff , N el , total atomic cross-section (σ t,a ), and total electronic cross-section (σ t,e ) in selected amino acids. Gaikwad, Pawar, and Selvam (2016) determined µ ρ , Z eff , N el , σ t,a , and σ t,e of fatty acids in an energy range between 122 keV and 1330 keV.…”

Section: Introductionmentioning

confidence: 99%

Determining the photon interaction parameters of iodine compounds as contrast agents for use in radiology

Çakır

2020

Journal of Radiation Research and Applied Sciences

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Purpose: x-ray contrast agents that contain iodine are commonly used for interventional and diagnostic procedures. To progress selective x-ray imaging, and discriminate the attenuating media, it is important to determine the absorption edge values and absorption features of the compounds used as contrast agents. For this purpose, μρ (mass attenuation coefficients), Zeff (effective atomic number) and Nel (electron density), which characterize the possibility of interaction with x-ray of iodine containing contrast agents (ICCAs: Iodixanol, Iohexol, Iopamidol, Iopromide, and Ioxagalete) were calculated using WinXCom code and Penelope Monte Carlo simulation programs. Materials and methods: Calculations were obtained in an energy range from 1keV to 1GeV. The values of Zeff and Nel were calculated using the µρ values of compounds. Variation in μρ, Zeff, and Nel values of the ICCAs were determined depend on x-ray energies. Results and discussion: It was determined that in the low energy region, where the probability of photoelectric absorption was high. In the intermediate energy region, where the compton scattering process occurs. Additionally, an increase was observed in the potential for pair production effect in the presence of high energy values. Moreover, since Z4-5 depended on the photoelectric effect, the cross-section significantly contributed to the Zeff values of the ICCAs; the highest values for Zeff and Nel were observed in low energy ranges. Furthermore, the results obtained from the two different code programs were similar to one another. Conclusion: The results of this study may be useful for determining the accuracy of the Zeff and Nel values of ICCAs using dual energy CT. As such, this research can contribute to developing a method for enhancing CT image quality.

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“…The μ=ρ constitutes base of various parameters such as Z eff and N eff , energy deposition, and dosimetric behavior. This value can be computed by some programs and is used as reference data (Al-Hamarneh et al, 2017;Eyecioğlu et al, 2017;Gaikwad et al, 2017;Isikli & Berna, 2017;Kurudirek & Onaran, 2015;Kurudirek & Yüksel, 2011;Manohara et al, 2010;More et al, 2016;Singh et al, 2018). Correct μ=ρ values must be obtained to provide basic data in various fields such as radiology, radiation dosimetry, gamma ray fluorescence studies, radiation physics, etc.…”

Section: Introductionmentioning

confidence: 99%

Investigation of mass attenuation coefficients, effective atomic numbers, and effective electron density for some molecules: study on chemotherapy drugs

Tuğrul

2020

Journal of Radiation Research and Applied Sciences

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Effective atomic number and electron density of amino acids within the energy range of 0.122–1.330 MeV

Cited by 57 publications

References 21 publications

Polymeric composite materials for radiation shielding: a review

Polymeric composite materials for radiation shielding: a review

Determining the photon interaction parameters of iodine compounds as contrast agents for use in radiology

Investigation of mass attenuation coefficients, effective atomic numbers, and effective electron density for some molecules: study on chemotherapy drugs

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