Fig. 27
From: “The Even-Lavie valve as a source for high intensity supersonic beam”
Temperature rise in a blunt skimmer [62]. The flowing gas is neon (energy accommodation coefficient 0.8) at 1 K and a number density of 1022 atoms/m3. Skimmer entrance aperture is 1 mm. The Temperature of the gas rises for only few ms at the skimmer entrance, but this can destroy fragile clusters