Figure 2. Examples of global results of data fitting to.

Eq. 1 (magenta line) at 280, 250, 100, and 10 K, and at Q = 0.77 Å⁻¹. The elastic peak (blue line) has the same shape of the resolution function. L1 (red line) refers to the translational Lorentzian term in Eq. 1 (first Lorentzian in Eq. 2). L2 (green line) refers to the roto-translational term (second Lorentzian in Eq. (2)). The background contribution is reported in light blue. At this Q-value the weight of the Bessel function is dominant when compared to , so making the translational term the leading one.