caa a22 4500 47582802X CHVBK 20180406123834.0 cr unu---uuuuu 170329e20000701xx s 000 0 eng 10.1007/BF02673516 doi (NATIONALLICENCE)springer-10.1007/BF02673516 Lifetime changes in the characteristics of thermionic converters [Elektronische Daten] [V. Agafonov, V. Yarygin] The substantiation of the lifetime stability of the emission properties of electrodes and electric characteristics of the electricity-generating channel (EGC) and element (EGE) of a space thermionic nuclear power system for an operating period of 5-10 or more years is examined. The basic reasons for the changes in the emission properties of EGE/EGC electrodes and a Topaz type reactor-converter are analyzed on the basis of test data and data from experimental simulation of the working processes in the interelectrode medium. A scheme is proposed for the working process occurring in the interelectrode medium of the EGE; the scheme is based on the Topaz materials and technology. The stability of the emission characteristics of electrodes with respect to possible changes during prolonged operation is analyzed for the most advanced designs of space nuclear power systems. The changes in time and the corresponding changes in the output electrical characteristics are estimated. 36 references. Kluwer Academic/Plenum Publishers, 2000 Agafonov V. aut Yarygin V. aut Atomic Energy Kluwer Academic Publishers-Plenum Publishers 89/1(2000-07-01), 565-573 1063-4258 89:1<565 2000 89 10512 https://doi.org/10.1007/BF02673516 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02673516 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Agafonov V. aut NATIONALLICENCE 700 1- Yarygin V. aut NATIONALLICENCE 773 0- Atomic Energy Kluwer Academic Publishers-Plenum Publishers 89/1(2000-07-01), 565-573 1063-4258 89:1<565 2000 89 10512 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer