Fig. 9
From: Merged neutral beams
Calculated ammonia transmission for an initially flat distribution and NH 3 in the (J,K,M K)=(1,1,-1) state. The black and grey curve show the transmission up to the lens for ±8 kV (gray) and ±12 kV (black) on the electrodes. Total transmission, including the lens, with ±12 kV on the guide electrodes are shown as red curve (lens voltage ±2 kV) and pink curve (lens voltage ±4 kV)