Neutralizing of colloidal electroroket thruster charged particles beam

Аuthors

Shtyrlin A. F.

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

e-mail: k.208@mai.ru

Abstract

The one of possible mode of electroroket colloidal thruster charged particles beam neutralizing with the help of thermo emission cathode-neutralizer is analyzed. The structure, emission characteristics and neutralizing parameters for colloidal thruster module with thermo emission cathode done with 0.1 mm tungsten wire are described. The neutralizing parameters are: emission current -400 [l A, cathode bias voltage up to 100V, electron energetic cost is less than 500eV/el, the potential of isolated from ground thruster is - 18V. The cathode lifetime calculated under condition of its mass thermal evaporation (2000 degrees Celsius) without taking into account erosion by secondary ions not less than 6 years.

Keywords:

colloidal electroroket thruster, thermo emission neutralizer, cathode testing with thruster module.