Overcoming the Child-Langmuir law via the magnetic mirror effect
arXiv:1208.3898 · doi:10.1016/j.physleta.2013.02.020
Abstract
The maximum current in a vacuum tube prescribed by the classical Child-Langmuir law can be overcome, when the space-charge effect of the induced potential is mitigated by the mirror effect in a spatially varying magnetic field. The current could exceed the Child-Langmuir value by as much as a few factors. The regime of practical interest is examined.