Influence of Cathode Diameter on the Operation of a Planar Diode with an Explosive Emission Cathode; Advances in High Energy Physics; Vol. 2011

Influence of Cathode Diameter on the Operation of a Planar Diode with an Explosive Emission Cathode; Advances in High Energy Physics; Vol. 2011

Podrobná bibliografie
Parent link:	Advances in High Energy Physics: Scientific Journal Vol. 2011.— 2011.— [14 p.]
Hlavní autor:	Isakova Yu. I. Yulia Ivanovna
Další autoři:	Kholodnaya G. E. Galina Evgenievna, Pushkarev A. I. Aleksandr Ivanovich
Shrnutí:	Title screen This paper presents the results of experimental investigations into the current-voltage characteristics of a planar diode with an explosive emission cathode made from graphite. Studies were performed using a TEU-500 pulsed electron accelerator (350–500keV, 100ns, 250J per pulse). Duration of diode operation, in a mode when electron current is limited by the emissive ability of the graphite cathode, is 15–20ns. The contribution of the cathode periphery to total electron current appears only as an increase in the emissive surface area due to an expansion of explosive plasma. Investigations of an ion diode with a graphite cathode (plane and focusing geometry) were also carried out. Experiments were performed using a TEMP-4M ion accelerator, which forms two nanosecond pulses: the first negative pulse (150–200kV, 300–600ns) followed by the second positive (250–300kV, 150ns). Total diode current in the first pulse is well described by the Child-Langmuir law for electron current at a constant rate of plasma expansion, equal to 1.3?cm/µs. It is shown that for an area of flat cathode over 25cm2, the influence of edge contribution does not exceed measurement error of total diode electron current (10%).
Jazyk:	angličtina
Vydáno:	2011
Témata:	электронный ресурс труды учёных ТПУ
On-line přístup:	http://dx.doi.org/10.1155/2011/649828
Médium:	MixedMaterials Elektronický zdroj Kapitola
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=637505

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