The WALS demonstrator can be used for the determination of particle sizes during the nanoparticle production.
To that end, two different laser optical measurement techniques are combined. Laser-Induced Incandescence (LII) allows for the determination of the size of single primary particles and of the volume concentration. Wide-Angle Light Scattering (WALS) enables the measurement of the aggregate size and the fractal dimension of particle clusters. The application of an ellipsoidal mirror leads to a highly resolved scattering diagram in the single shot mode. Thereby, the user receives the value of the radius of gyration in quasi real-time (50 ms).