"material attenuation" is a correct and usable phrase in written English.
Its definition is "a decrease in the magnitude or intensity of something," and it most commonly refers to the weakening of a signal or light instead of it being blocked completely. For example, you could say: "The material attenuation of the light coming through the window made it difficult to read".
The buildup factor of point kernel method is of importance, which depends on photon energy and material attenuation parameter.
The effective atomic number of the unknown initiator was increased until the outputted material attenuation corresponded to that measured on CT.
Because of the continuous charge and discharge during the battery's life cycle, the lithium iron loss and active material attenuation in the lithium iron phosphate battery could cause irreversible capacity loss which directly affects the battery's service life.
An estimate of material attenuation at isotope energies was estimated assuming that the monomer/oligomer mixture has a similar effective atomic number to polymethylmethacrylate (PMMA) and substituting the unknown initiator for materials with different effective atomic numbers as an input into the NIST X-COM program [13].
Neutron production source terms, shield material attenuation lengths, and neutron dose rate reduction effectiveness of the bulk shielding in the angular range from 0° to 125° were determined by the Particle and Heavy Ion Transport Code (PHITS) for beams of 300 and 550 MeV/u 48Ca ions, 200 and 400 MeV/u 238U ions, 800 MeV/u 3He and 1 GeV protons.
Based on the results, using photopeak count approach the differences in the material attenuations can be better distinguished.
Further addition of common chronic diseases to the model (model 3) did not lead to further material attenuations of the risk ratios.
In biological materials, attenuation of sound is more rapid at higher frequencies.
For the same material, the attenuation at 5 MHz was similar to the reference material while at 7 and 8.5 MHz it was 33% and 54% higher respectively.
Open image in new window Fig. 1 Material-specific attenuation curves of bone, iodine and water plotted versus photon energy.
In comparison to dual-energy CT used in clinical practice, recently developed energy-sensitive photon-counting detectors sample the material-specific attenuation curves at multiple energy levels and within narrow energy bands; the latter allows the detection of element-specific, k-edge discontinuities of the photo-electric cross section.
