Investigation of magnetically self-insulated effect in an ion diode with an explosive emission potential electrode; Physics of Plasmas; Vol. 17, iss. 1

Investigation of magnetically self-insulated effect in an ion diode with an explosive emission potential electrode; Physics of Plasmas; Vol. 17, iss. 1

Detalles Bibliográficos
Parent link:Physics of Plasmas.— , 1958-
Vol. 17, iss. 1.— 2009.— [013104, 8 р.]
Outros autores: Pushkarev A. I. Aleksandr Ivanovich, Isakova Yu. I. Yulia Ivanovna, Saltimakov M. S., Sazonov R. V. Roman Vladimirovich
Summary:Title screen
The results of an experimental investigation of a magnetically self-insulated effect in an ion diode in bipolar-pulse mode are presented. The investigations were accomplished at the TEMP-4M accelerator by formation of a first negative pulse (100 ns, 150–200 kV) and a second positive pulse (80 ns, 200–300 kV) [G. E. Remnev et al., Surf. Coat. Technol. 114, 206 (1999)]. Plasma behavior in the anode-cathode gap was analyzed according to the current-voltage characteristics of the diode with a time resolution of 0.5 ns. It is shown that during the discrete emissive surface mode, the magnetic field influence on plasma dynamics is slight. During the space charge limitation mode, the current-voltage characteristics of the diode are well-described by the Child–Langmuir ratio. The drift speed of electrons in the diode exceeds 80 mm/ns and the effect of magnetic insulation is insignificant. It was discovered, when plasma formation at the potential electrode is complete and up until the second positive pulse that the plasma speed is constant and equals to 1.3±0.2 cm/µs1.3±0.2 cm/µs. After the voltage polarity at the potential electrode changes (second pulse), plasma breakup at the anode-cathode gap takes place. The impedance of the diode begins to increase and, when the total current is more than 30 kA, the diode impedance exceeds the calculated values by more than three times. The energy efficiency and limiting characteristics of the magnetically self-insulated diode are determined.
Режим доступа: по договору с организацией-держателем ресурса
Idioma:inglés
Publicado: 2009
Subjects:
электронный ресурс
труды учёных ТПУ
ионные диоды
изоляция
взрывная эмиссия
Acceso en liña:http://dx.doi.org/10.1063/1.3294558
Formato: Electrónico Capítulo de libro
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=652438

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