Fig. 3.

Structure and dynamics of dilute nanoparticle dispersion. (A) Intensity as a function of wavevector transfer $q$ for different fluences $H$. The vertical offset indicates the intensity variation with fluence. For each $H$ several runs were performed at different sample spots whose $I\left(q\right)$ match each other within the statistical accuracy. The dashed line shows the calculated form factor of spherical particles with $R=69$ nm and $\mathrm{\Delta }R/R=0.045$. (B) Square modulus of the intermediate scattering function obtained from the correlation function $g_2$ via Eq. 2 for different $q$ values. The data were measured at $H=27.7$ mJ/${\mathrm{m}\mathrm{m}}^2$ with a single-pulse train. (C) Relaxation rates for different fluences $H$ as a function of $q^2$. The dashed lines are fits of Eq. 4 to the data with the temperature as the only free parameter.