Results 21 to 30 of about 1,153 (166)
Brazilian Journal of Radiation Sciences, 2020 O Craqueamento Catalítico Fluido (FCC) é um processo usado na indústria petroquímica para converter algumas frações de petróleo que são mais pesadas em frações mais leves, como gasolina e GLP, por exemplo.
Victor Hugo Farias Ferreira da Silva +7 more
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XCOM: Photon cross sections on a personal computer [PDF]
, 1987 A computer program and data base are presented which can be used to calculate, with a personal computer, photon cross sections for scattering, photoelectric absorption and pair production, as well as total attenuation coefficients, in any element, compound or mixture, at energies from 1 keV to 100 GeV.
Berger, M.J., Hubbell, J.H.
openaire +2 more sources
Investigation of gamma radiation shielding features for modified structural materials for nuclear energy and nuclear medicine [PDF]
Nuclear Technology and Radiation Protection, 2023 In this paper, shielding characteristics of three concrete samples with different B4C,Fe3O4,and BaSO4 contents were examined by determining their theoretical and experimental mass attenuation coefficients at photon energies of 15 MeV.
Zaripova Yuliya +4 more
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Radiation Protection and Environment, 2019 An attempt has been made to prepare the nonlead-based gamma shielding materials by adding different weight percentages (0%, 10%, 20%, and 40%) of bismuth in high-density polyethylene (HDPE) matrix.
M Sheela +3 more
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Frontiers in Biomedical Technologies, 2023 Propose: shielding medical radiation requires deep knowledge of radiation physics and shielding design methods. Materials and Methods: Effective neutron mass removal cross-section (ΣR/ρ) was derived for the ordinary concrete doped with 50nm of TiO2 (5%),
Sara Ghanavati +3 more
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A Pulsar Vector Observation-Based Link Acquisition Method for X-Ray Communications
International Journal of Aerospace Engineering, 2023 X-ray communication (XCOM) is an emerging laser communication technique for deep space applications. Traditional link acquisition of laser communications depends significantly on Earth support and shows little autonomy.
Shibin Song, Xiao Lu, Haixia Wang
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Entropy, 2023 The development of reinforced polymer composite materials has had a significant influence on the challenging problem of shielding against high-energy photons, particularly X-rays and γ-rays in industrial and healthcare facilities.
Giuseppe Varone +9 more
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Comparing 511 keV Attenuation Maps Obtained from Different Energy Mapping Methods for CT Based Attenuation Correction of PET Data [PDF]
Iranian Journal of Medical Physics, 2008 Introduction: The advent of dual-modality PET/CT scanners has revolutionized clinical oncology by improving lesion localization and facilitating treatment planning for radiotherapy.
Maryam Shirmohammad +3 more
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First evaluation of a heteroepitaxial diamond ionization chamber operating at low voltage for diagnostic X-ray dosimetry. [PDF]
Med PhysAbstract Background Heteroepitaxial diamond has recently gained attention as a radiation detector material due to its wide bandgap, radiation hardness, and near‐tissue equivalence. Despite these advantages, its use as a solid‐state ionization chamber for diagnostic X‐ray dosimetry has not yet been established.
Shinsho K +12 more
europepmc +2 more sources
Optical, magnetic characterization, and gamma-ray interactions for borate glasses using XCOM program [PDF]
Journal of Theoretical and Applied Physics, 2019 Abstract In the present study, the optical characterization of borate glasses with composition 35Li2O − 10ZnO − 55B2O3 − xMnO2: x = 0, 0.5, 1.0, 1.5, and 2.0 wt% has been investigated. The absorption spectra measurements within the wavelength domain 200–1000 nm have been carried out.
Y. S. Rammah +3 more
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