Influence of Cathode Diameter on the Operation of a Planar Diode with an Explosive Emission Cathode
Joint Authors
Isakova, Yulia I.
Kholodnaya, Galina E.
Pushkarev, Alexander I.
Source
Advances in High Energy Physics
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-10-31
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
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 (350–500 keV, 100 ns, 250 J per pulse).
Duration of diode operation, in a mode when electron current is limited by the emissive ability of the graphite cathode, is 15–20 ns.
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 (150–200 kV, 300–600 ns) followed by the second positive (250–300 kV, 150 ns).
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 25 cm2, the influence of edge contribution does not exceed measurement error of total diode electron current (10%).
American Psychological Association (APA)
Isakova, Yulia I.& Kholodnaya, Galina E.& Pushkarev, Alexander I.. 2011. Influence of Cathode Diameter on the Operation of a Planar Diode with an Explosive Emission Cathode. Advances in High Energy Physics،Vol. 2011, no. 2011, pp.1-14.
https://search.emarefa.net/detail/BIM-488181
Modern Language Association (MLA)
Isakova, Yulia I.…[et al.]. Influence of Cathode Diameter on the Operation of a Planar Diode with an Explosive Emission Cathode. Advances in High Energy Physics No. 2011 (2011), pp.1-14.
https://search.emarefa.net/detail/BIM-488181
American Medical Association (AMA)
Isakova, Yulia I.& Kholodnaya, Galina E.& Pushkarev, Alexander I.. Influence of Cathode Diameter on the Operation of a Planar Diode with an Explosive Emission Cathode. Advances in High Energy Physics. 2011. Vol. 2011, no. 2011, pp.1-14.
https://search.emarefa.net/detail/BIM-488181
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-488181