Pulsed Supersonic Beams from High Pressure Source: Simulation Results and Experimental Measurements
Figure 4
Beam density and angular spread (FWHM) as a function of the conical nozzle opening angle. Two accommodation models are shown in (a) (energy accommodation is 1 or 0.4); we calculated the expected beam density at a distance of 500 nozzle diameters (100 mm.) and a stagnation pressure of 30 bars. Admittedly this is a wild extrapolation of the simulated results which were performed at 0.3 bars only.
