And if both absorption and scattering are important, we can define linear, atomic and mass extinction coefficients, using the symbol κ, where All the foregoing equations are valid, whether we...And if both absorption and scattering are important, we can define linear, atomic and mass extinction coefficients, using the symbol κ, where All the foregoing equations are valid, whether we use linear, atomic or mass absorption, scattering or extinction coefficients, and whether we refer to radiation integrated over all frequencies or whether at a particular wavelength or within a specified wavelength range.
The mass absorption coefficient, mass scattering coefficient and mass extinction coefficient each with units m 2 kg -1 are defined respectively as α/ρ, σ/ρ and ε/ρ, where ρ is the density (kg m -3 ) o...The mass absorption coefficient, mass scattering coefficient and mass extinction coefficient each with units m 2 kg -1 are defined respectively as α/ρ, σ/ρ and ε/ρ, where ρ is the density (kg m -3 ) of the medium. The atomic (or molecular) absorption, scattering and extinction coefficients are respectively α/N, σ/N and ε/N, where N is the number density (atoms or molecules per unit volume), with units of m 2 /atom (or molecule).
where I is the incoming intensity of the light, dI is the amount of light added to the beam (hence the negative sign), ds is the distance it travels, and ρ is the density of ...where I is the incoming intensity of the light, dI is the amount of light added to the beam (hence the negative sign), ds is the distance it travels, and ρ is the density of the material.
