. The Bell System technical journal . tra. DO (a) COLLECTOR CURRENT DIA APERTURE r-^ r K 1 \ , 1 \ /^ IL \ \ 1 \ V / \ V / \ 1 \ / / \ V \ s_ y \ V> ^ \ ,^ J UJ to zo 0.(U q:a o (-o UJHUJ o (b) NARROW-BAND NOISf^ POWER kiu f=165 MC ^ \ 1 i / \ / If^ \ I A / \ \ 1 \ ii* ^ r\ III / 1 \ 1 1 / \ NLi / tW \ J 1 y ^W ^ Tvfp w M/< f 252015 10 to _) UJ - 5 UJ O (C) RELATIVE NOISE POWER, AT 3930 MC 1 \\ n i^ii ^ aW^ M\ y / \, \ N / \ f \ liLn* / IT \ b / 1 V I; / ^Tjl n 4 6 8 10 12 14 16 Z IN INCHES ALONG DRIFT TUBE (O IS FROM ANODE)8 = GAUSS, Be = GAUSS, V = 2200 VOLTS,


. The Bell System technical journal . tra. DO (a) COLLECTOR CURRENT DIA APERTURE r-^ r K 1 \ , 1 \ /^ IL \ \ 1 \ V / \ V / \ 1 \ / / \ V \ s_ y \ V> ^ \ ,^ J UJ to zo 0.(U q:a o (-o UJHUJ o (b) NARROW-BAND NOISf^ POWER kiu f=165 MC ^ \ 1 i / \ / If^ \ I A / \ \ 1 \ ii* ^ r\ III / 1 \ 1 1 / \ NLi / tW \ J 1 y ^W ^ Tvfp w M/< f 252015 10 to _) UJ - 5 UJ O (C) RELATIVE NOISE POWER, AT 3930 MC 1 \\ n i^ii ^ aW^ M\ y / \, \ N / \ f \ liLn* / IT \ b / 1 V I; / ^Tjl n 4 6 8 10 12 14 16 Z IN INCHES ALONG DRIFT TUBE (O IS FROM ANODE)8 = GAUSS, Be = GAUSS, V = 2200 VOLTS, I = MA PEAK 18 Fig. 4 — The fields have been adjusted for maximum amplitude, at the samereference probe position, of a wave excited in the diode, with frequency unafTectedby the magnetic field, 165 mc. The cyclotron frequency for this field is mc. 862 16 If) S 2< a. cc o (a) COLLECTOR CURRENT \ r DIA APERTURE \ \ / N, / / 1 \ / \ \ / 1 \ \ / r V V y Nj J \ 1 \ / \ • *s_ V. uto zo ;0UJ cr I-o UJHUJO.


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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1