Analysis of ferroelectric emission using initial energy effects

A new theory is proposed here to explain emission from a ferroelectric cathode using a non-zero initial (kinetic) energy for the electrons emitted from the cathode. The traditional Child-Langmuir limit on current density has been exceeded by most ferroelectric limit on current density has been exceeded by most ferroelectric cathode experiments. Ferroelectric emission is inherently from electrons which have been ejected from a cathode with a non-zero initial energy. Thus one can question the applicability of the Child-Langmuir limit to explain ferroelectric emission. The new theory proposed here shows that if initial energy is taken into account then one can justify the higher current densities observed in ferroelectric cathode experiments