Calculations concerning the electron transit time for an ideal cylindrical vacuum microelectronics diode

In this paper, the formulae of the potential distribution and the formulae of the electron transit time were derived mathematically for an ideal cylindrical vacuum microelectronics diode by using of the Laplace equation and the basic definition. By using the formulae, an idea about an equivalent vacuum microelectronics diode was introduced and the electron transit time of an ideal cylindrical vacuum microelectronics (IC-VME) triode was further estimated.