PLASMA CHARACTERISTICS IN SQUARE PULSE ARC DISCHARGE OF PLASMA CATHODE ELECTRON SOURCE DEVICE

Abstract

PLASMA CHARACTERISTICS IN SQUARE PULSE ARC DISCHARGE OF PLASMA CATHODE
ELECTRON SOURCE DEVICE. Plasma parameters in Plasma Cathode Electron Source Device (PCESD)
are very important things because they will determine the eficiency of its electron extraction. Square pulse
mode of PCESD’s arc discharge plasma current can be obtained by using Pulse Forming Network (PFN)
circuits which is called Arc Discharge Power Supply (ADPS). The square pulse mode is necessity to simplify
in electron irradiation dose calculation. ADPS is connected with Hollow Anode Chamber (HAC) which is
placed inside of PCESD to produce arc discharge plasma. The value of arc discharge plasma current is the
main key to determine plasma parameters that can be measured by using Rogowski coil. The value of the
arc discharge plasma current is IADPS = 206.30 A with pulse width  = 80 μs. Whereas the plasma
parameters values inside of the HAC are: the electron plasma density ne = (16.85  1019) m-3, electron
plasma temperature Te = 2.609 eV, electron plasma frequency fe = 116.74 GHz, and Debye length λD =
9.958 µm respectively