Guinier plot

https://doi.org/10.1351/goldbook.G02712
A diagrammatic representation of data on
scattering
from large particles, obtained at different angles but at the same concentration, constructed by plotting log10ΔR(θ) or log10P(θ) versus (sinθ2)2 or q2 and (usually) used for the evaluation of the
radius of gyration
. ΔR(θ) is the
excess Rayleigh ratio
, P(θ) the
particle scattering function
, θ the
scattering angle
and q the length of the
scattering vector
.
Source:
Purple Book, 1st ed., p. 67 [Terms] [Book]