منابع مشابه
Current Status of 5A Lab6 Hollow Cathode Life Tests in Lanzhou Institute of Physics, China
The current statuses of lifetime test of LaB6 hollow cathode at the Lanzhou Institute of Physics (LIP), China, was described. 5A LaB6 hollow cathode was design for LIPS-200 40mN Xenon ion thruster, and it could be used for LHT-100 80 mN Hall thruster, too. Life test of the discharge and neutralizer modes of LHC-5 hollow cathode were stared in October 2011, and cumulative operation time reached ...
متن کاملTemporal Fluctuations in a 100-A LaB6 Hollow Cathode
The temporal fluctuations in the near plume of a 100-A LaB6 hollow cathode are experimentally investigated. A probe array is employed to measure the amplitude and dispersion of axial modes in the plume, and these properties are parametrically examined as a function of cathode operating investigations. The onset of ion acoustic turbulence (IAT) is observed at high current values, and the charact...
متن کاملNumerical Simulations of the Partially-ionized Gas in a 100-A LaB6 Hollow Cathode
Numerical simulations of a hollow cathode with a LaB6 emitter operating at 100 A have been performed for the first time using the 2-D Orificed Cathode (OrCa2D) code. Results for a variety of plasma properties are presented and compared with laboratory measurements. The large size of the device permits peak electron number densities in the cathode interior that are lower than those established i...
متن کاملHigh 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.
متن کاملLow-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...
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ژورنال
عنوان ژورنال: Review of Scientific Instruments
سال: 1989
ISSN: 0034-6748,1089-7623
DOI: 10.1063/1.1140305