## With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

No credit card required

Combining these three equations, the index of refraction in the oscillator model is given by

$equation$

and expressing the numerical constants by r0 and using ω = ck = 2πc/λ yields

$equation$

For typical x-raywavelengths (λ ≈ 1 Å) and electron densities of soft matter (ρe (H2O) = 0.334 Å−3) as well as ωωr, the second term is much smaller than unity. Using the Taylor expansion $equation$yields the x-ray index of refraction

$equation$

Note that by the above derivation, the index of refraction as a macroscopic quantity has been linked to the atomic phenomenon of scattering. The inherent ...

## With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

No credit card required