caa a22 4500 475821599 CHVBK 20180406123820.0 cr unu---uuuuu 170329e20000901xx s 000 0 eng 10.1023/A:1009427903065 doi (NATIONALLICENCE)springer-10.1023/A:1009427903065 Formation of Accelerated Electron Flows under the Conditions of a Pulsed Low-Current Vacuum Discharge [Elektronische Daten] [A. Batrakov, S. Popov, D. Proskurovsky] It is well known that a vacuum arc discharge operating at nearly threshold currents is unstable and features short-time (10-7-10-8 s) voltage and current bursts. We were the first to detect under these conditions bursts of the electron current from the cathode in the circuit of a collector located normal to the discharge axis and having a considerable (up to ∼1 kV) electron-retarding potential with respect to the cathode. It has been revealed that the most intense and high-energy electron flows are formed as an arc discharge re-ignites after its extinction. These flows are to a large measure responsible for the current transfer between the electrodes at this time and are not local jets in character. It has been shown that the mechanism for the generation of intense radially accelerated electron flows from the cathode is related to the formation of nonstationary double layers between the near-cathode and near-anode plasmas and to the rapid decrease in near-anode plasma potential upon re-ignition of an arc. This concept offers an adequate description of the duration of electron current bursts at the collector and the electron energy spectrum obtained experimentally by the method of retarding potentials. Plenum Publishing Corporation, 2000 Batrakov A. Institute of High Current Electronics, Siberian Branch of the Russian Academy of Sciences, Russia aut Popov S. Institute of High Current Electronics, Siberian Branch of the Russian Academy of Sciences, Russia aut Proskurovsky D. Institute of High Current Electronics, Siberian Branch of the Russian Academy of Sciences, Russia aut Russian Physics Journal Kluwer Academic Publishers-Plenum Publishers 43/9(2000-09-01), 747-753 1064-8887 43:9<747 2000 43 11182 https://doi.org/10.1023/A:1009427903065 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1009427903065 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Batrakov A. Institute of High Current Electronics, Siberian Branch of the Russian Academy of Sciences, Russia aut NATIONALLICENCE 700 1- Popov S. Institute of High Current Electronics, Siberian Branch of the Russian Academy of Sciences, Russia aut NATIONALLICENCE 700 1- Proskurovsky D. Institute of High Current Electronics, Siberian Branch of the Russian Academy of Sciences, Russia aut NATIONALLICENCE 773 0- Russian Physics Journal Kluwer Academic Publishers-Plenum Publishers 43/9(2000-09-01), 747-753 1064-8887 43:9<747 2000 43 11182 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer