Figure 1
A schematic of the ALS geometry, which is cylindrically symmetric about the dashed line. Carrier gas flows from left to right. The black solid line is the 2D geometry used for the simulations, consisting of five aperture and tube pieces. The inner radius (Rn) of the tube as well as the lens-aperture radius (rn) can be changed individually (Roth et al., 2021); see the main text for details. |