Small-angle X-ray scattering measurements of water droplets in a mist were carried out using the BL15XU beamline at SPring-8. The diameter of the water droplets generated by ultrasonic atomization was found to be >= 50 nm and had no distribution in the range under 50 nm, as predicted. The study also showed how difficult it is to measure the small-angle scattering of low-density materials, such as liquid droplets in a mist.
Yano, Y. F., Matsuura, K., Fukazu, T., Abe, F., Wakisaka, A., Kobara, H., … Tanaka, M. (2007). Small-angle X-ray scattering investigation of water droplets in mist. In Journal of Applied Crystallography (Vol. 40). https://doi.org/10.1107/S0021889807008138