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- W2000858742 abstract "A theory is presented which investigates the emission fluctuations arising from random arrival of barium at the surface of the grains followed by donor migration through the effective emitting part of the grains. The basic causes for the noise are diffusion of donor centers and electrolysis in the coating, processes which are known to be vital in cathode operation. The computed spectra are characterized by a diffusion relaxation time, a diffusion-conduction time constant, and a parameter involving the electric field in the coating surface layer. Three different types of spectra result from this. Experimental data are reported, mainly on 2×2 diodes which support various aspects of the theory. The dependence of the turnover frequencies on temperature, activation, and current is in good agreement with the predicted results. The magnitude of the noise is close to Poissonian, contrary to previous claims. Recommendations for attaining low flicker noise are given." @default.
- W2000858742 created "2016-06-24" @default.
- W2000858742 creator A5075573552 @default.
- W2000858742 creator A5088558114 @default.
- W2000858742 date "1964-07-01" @default.
- W2000858742 modified "2023-09-26" @default.
- W2000858742 title "Flicker Noise in Oxide Cathodes Arising from Diffusion and Drift of Ionized Donors" @default.
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- W2000858742 doi "https://doi.org/10.1063/1.1702789" @default.
- W2000858742 hasPublicationYear "1964" @default.
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