Chudley-Elliot
Models the Q dependence of the QENS line width (Gamma (hwhm)), diffusion coefficients (D), residence times (tau) and jump lengths (length) to extract the associated long range diffusive motions of molecules. The Chudley-Elliot Jump diffusion model (1961) has the form:
Gamma(Q) = (1 − sin(Ql)/Ql)/tau