Current interruption in a low-pressure high-current pulsed discharge with hollow cathode

Low-Current Hollow Cathode Evaluation

An experimental investigation of the operating characteristics of 3.2 mm diameter orificed hollow cathodes was conducted to examine low-current and low flow rate operation. Cathode power was minimized with low orifice aspect ratio and the use of an enclosed keeper. Cathode flow rate requirements were proportional to orifice diameter and the inverse of the orifice length. Cathode temperature pro...

Pressure effect on a tandem hollow cathode discharge in argon

High Current Density Pulsed Cathode Experiments at Slac

A 1.9 microperveance beam diode has been constructed to test high current density cathodes for use in klystrons. Several standard and specially coated dispenser cathodes are being tested. Results of tests to date show average cathode current densities in excess of 25 amps/cm, and maximum electric field gradients of more than 450 kV/ cm. for pulses of the order of 1 /'sec.

Transition characteristics of low-pressure discharges in a hollow cathode

Strong Enhancement of Dd-reaction Accompanied by X-ray Generation in a Pulsed Low Voltage High-current Deuterium Glow Discharge with a Ti-cathode

Using noiseless solid-state CR-39 plastic track and Al2O3:C thermo-luminescent detectors, the yields of 3.0 MeV protons from DD-reaction and soft x-ray photons emitted from the cathode were studied in the periodic pulsing deuterium glow discharge with titanium cathodes at low discharge voltages (in the range 0.8–2.5 kV) and high current density (300–600 mA/cm2). The analysis of DD-proton yield ...