Multipacting Discharges between Coaxial Electrodes

Experimental evidence is presented to demonstrate the scaling relations of the similarity principle for multipacting as applied to coaxial electrodes with b/a (b and a are the radii of the outer and inner electrodes, respectively) varying between 2.3 and 18.26. The two field configurations considered are: (1) rf voltage applied to the electrodes and (2) rf and dc voltages applied to the electrodes. The modes of multipacting are also studied and identified.