Correlation between nonequilibrium thermodynamic theory and V‐I curves of a thermionic converter

Autor:	K. Shimada, L. B. Robinson
Rok vydání:	1976
Předmět:	Chemistry General Physics and Astronomy Non-equilibrium thermodynamics Inverse Thermionic emission Statistical physics Mechanics Current (fluid) Thermionic converter Short circuit Diode Voltage
Zdroj:	Journal of Applied Physics. 47:107-113
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.322356
Popis:	The methods of irreversible thermodynamics are used as a basis for developing a transport theory applicable to thermionic cesium diodes. This theory is applied in describing certain aspects of experimental voltage-current (V-I) characteristic curves of a thermionic diode. Emphasis is placed on the open-circuit voltage and short-circuit current of the V-I curves. Experimental results show that the open-circuit voltage is essentially independent of the interelectrode spacing, whereas the short-circuit current varies inversely with the interelectrode separation. The inverse dependence is in agreement with the results of the present analysis and also with results expected from diffusion theory, which has been used in other analyses. In fact, the theory used in this investigation reduces to diffusion theory under special assumptions. Deviations from diffusion theory, which were found in experimental results, can be accounted for using the theory developed in this paper.
Databáze:	OpenAIRE
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