Use this resource - and many more! - in your textbook!
AcademicPub holds over eight million pieces of educational content for you to mix-and-match your way.
Development of long-lifetime cold cathodes
By: Zagulov, F.Ya.; Mesyats, G.A.; Rostov, V.V.; Polevin, S.D.; Landl, V.F.; Bykov, N.M.; Kutenkov, O.P.; Korovin, S.D.; Gunin, A.V.; Gubanov, V.P.;
1995 / IEEE / 0-7803-2791-8
This item was taken from the IEEE Periodical ' Development of long-lifetime cold cathodes ' The paper presents the results of an experimental study of the cold cathodes used in the Sinus-type repetitive high-current accelerators. The accelerating voltage for this accelerator is on a level of 100-1000 keV, the electron beam current is 1-10 kA, the pulse duration is 10-40 ns, and the pulse repetition rate is up to 200 pps. The emissive properties of the cathodes were investigated for both planar and coaxial magnetically insulated vacuum diodes. To produce high-current electron beams in coaxial diodes, a strong magnetic field of strength up to 30 kOe created by a superconducting solenoid was used. Investigated in the experiment were explosive-emission cold cathodes of varied geometry made of various materials such as copper, steel, stainless steel, bronze, graphite, and carbon-graphite cloth as well as metal-dielectric cathodes depending for their operation on an incomplete electrical discharge over the dielectric surface. The longest lifetime has been attained for a metal-dielectric cathode in a planar vacuum diode; it is over 10/sup 8/ shots. The cathode provided the current density at the anode 20-25 A/cm/sup 2/ for the accelerating voltage 600 kV, pulse duration 20 ns, and pulse repetition rate up to 200 pps.
Electron Beam Current
Pulse Repetition Rate
Coaxial Magnetically Insulated Vacuum Diodes
Strong Magnetic Field
Explosive-emission Cold Cathodes
Incomplete Electrical Discharge
10 To 40 Ns
100 To 1000 Kev
Sinus-type Repetitive High-current Accelerators
Long-lifetime Cold Cathodes
1 To 10 Ka
Pulsed Power Technology
Planar Magnetically Insulated Vacuum Diodes