Results 21 to 30 of about 1,099 (156)
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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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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
doaj +1 more source
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
doaj +1 more source
Frontiers in Human Neuroscience, 2021 Knowledge about the developmental process of dynamic balance control comprised of upper arms and upper legs coordination and trunk and pelvis twist coordination is important to advance effective balance assessment for abnormal development.
Hiroki Mani +5 more
doaj +1 more source
Nuclear Engineering and Technology, 2022 The aim of this work is to study the radiation shielding properties of cement samples with waste glass incortated into its composition. The mass attenuation coefficient (MAC) of the samples were experimentally determined to evaluate their radiation ...
Mohanad S. Eid +6 more
doaj +1 more source
New beam hardened data correction and its application to artifact reduction in CT images. [PDF]
Med PhysAbstract Background Beam hardening is an unavoidable phenomenon in polychromatic CT systems, where lower‐energy photons are preferentially absorbed as x‐rays pass through materials such as tissue, bone, and metal. This energy‐dependent attenuation, which conflicts with the monochromatic assumption in filtered back‐projection (FBP), produces artifacts ...
Kim S +5 more
europepmc +2 more sources