Ubiquitous in the field of electric propulsion, thermionic hollow cathodes are electron sources ... For example, erosion of the cathode keeper face in long-duration wear tests causes premature device ...

It consists of a three-terminal TIPV device made with a tungsten (W) thermionic cathode, a PV/anode structure made of an indium phosphide (n-InP) anode, and a photovoltaic cell based on indium ...

Ubiquitous in the field of electric propulsion, thermionic hollow cathodes are electron sources ... For example, erosion of the cathode keeper face in long-duration wear tests causes premature device ...

The idea is to make a heated filament the cathode, so electrons are ejected from the hot surface by thermionic emission. These are forced into a spiral path using a perpendicular magnetic field.

This lovely little number is the EF80 pentode thermionic valve ... begins with slow and careful hand assembly of an EF80. The cathode is inserted into a mica disc, and a series of three grids ...

FEI Tecnai 12 The FEI Tecnai T12 located in the Wolfson Bioimaging Facility and is equipped with a 120 kV tungsten thermionic cathode and Ceta 16 M CCD detector. It is operated at ambient temperatures ...