Accession Number : AD0489539

Title :   HIGH-POWER MAGNETRON INJECTION GUN NOISE STUDY.

Descriptive Note : Quarterly progress rept. no. 4, 1 Feb-1 May 66,

Corporate Author : MICHIGAN UNIV ANN ARBOR ELECTRON PHYSICS LAB

Personal Author(s) : Boers, J. E. ; Masnari, N. A. ; Sterrett, R. E. ; Rowe, J. E.

Report Date : AUG 1966

Pagination or Media Count : 56

Abstract : The conditions required for general laminar space-charge flow have been investigated and the results compared with the special Brillouin flow results. The conditions in the cathode region have been shown to be critical in determining the characteristics of the space-charge flow. Variations in the initial velocity of an electron indicated that the radial emission velocity had little effect on the trajectory but changes in the tangential components created significant differences in the electron motion. The digital computer space-charge flow program indicated the need for a finer matrix subdivision in the cathode region. The Monte Carlo simulation program is being developed for the random emission process to be used in the analysis of the noise characteristics of the MIG. Experimental investigations of an 8 degree cathode MIG indicated that constant thickness, quasi-laminar, nonundulating hollow electron beam was formed with the inner diameter approximately equal to the front diameter of the cathode. The emission from various portions of the cathode could be enhanced or suppressed by varying the voltages on the appropriate accelerator electrodes. (Author)

Descriptors :   (*MAGNETRONS, ELECTRON GUNS), (*ELECTRON GUNS, NOISE(RADIO)), INJECTION, ELECTRON BEAMS, SPACE CHARGE, ELECTRONS, VELOCITY, TRAJECTORIES, COMPUTER PROGRAMMING, DIGITAL COMPUTERS, CATHODES(ELECTRON TUBES), MONTE CARLO METHOD, SIMULATION, THERMIONIC EMISSION, EQUATIONS OF MOTION, LAMINAR FLOW, DIFFERENCE EQUATIONS.

Subject Categories : Electrical and Electronic Equipment
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE