(Science: radiobiology) a measure of the opacity of a layer of material for radiation transversing it, the ratio of the incident intensity to the transmitted intensity. It is equal to Io/I, where Io and i are the intensities of the incident and emergent radiation, respectively. In the usual sense of exponential absorption (i = Ioe- m x), the attenuation factor is e- m x, where x is the thickness of the material and m is the absorption coefficient.
Results from our forum
... UV grade silica-silica fibers at 400 °C reduces transmission loss by a factor of at least 100, but has little or no effect on radioluminescence. ... The mode structure of transmission loss is mainly simple path length attenuation, with a suggestion of internal reflection degradation. ©1997 ...
See entire post