Equilibria of high-current electron beams in an axial magnetic field are considered at the base of the approach [1] for the two cases of shielded and immersed cathodes. A general wave equation in the electrostatic approximation, which is valid in any selfconsistent equilibrium, was derived under the only assumption of constancy of full particle energy. This equation supplements general steady s...

A field emission vacuum switch using vertically aligned carbon nanotubes grown by a direct current plasma enhanced chemical vapor deposition is reported. Cathodes with optimized field emission properties were evaluated in diode configuration as a test vehicle for the construction of a vacuum power three terminal triode device. Limiting factors such as space charge effects involved with high cur...

Ni-rich LiNi0.6Co0.2Mn0.2O2 (NCM) and LiNbO3-protected thin-film cathodes have been prepared by radio frequency (RF) magnetron sputtering. Electrochemical investigations show enhanced stability of compared with bare LiNi0.6Co0.2Mn0.2O2. The interfacial interaction LiNbO3 layers has investigated XPS depth profiling demonstrated different cathode electrolyte interface (CEI) film formation process...