Electron ‘ Temperature ’ in Crossed Fields†

Abstract
Lately a general steady-state theory of continuous-cathode erossed-held devices has been developed, by taking into account the initial velocity distribution of the emitted electrons. The object of this note is: (1) to see how far this theory can account for the shape of the cut-off curve of a magnetron, (2) to investigate some general and important consequences of the initial velocity spread of the. emitted electrons, and (3) to explain the existence of high ‘ temperature ’ in systems which conserve energy rigorously, A graphical solution of the transcendental aquation for calculating the idealized cut-off or Hull radius of cylindrical magnetrons is added in the Appendix,

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