Rca1948FrequencyModu.. - The New Jersey Antique Radio Club

xe«MODULATION BY ELECTRON BEAMS 479Integration of (6)gives|e|fafX = -E WD _ [ e i(a)c- t 1] (16)m 2 (oj — u> c ) (i)l*Ux = ;^0IITm a c 6(o>^o> c ). (17)As long as|intensity.|mnx S= (d/2), A«> and G eare independent of the fieldIt is of interest to estimate, in a rough way, the largest possiblefrequency change consistent with space-charge limitations and grazingincidence that can be effected with the introduction of a resonantbeam of the type herein described. Consider a beam of thickness tand width W moving between a pair of parallel-plane electrodes alsoof width W, of length L, and a distance d apart. We shall assume thatall the stored energy in the system is contained between the parallelplaneelectrodes and select a case of particular interest, namely(«>,, --