| Autor: |
Naoji Yamamoto, Yoshihiro Arakawa, Kimiya Komurasaki, Shinsuke Yasui, Ken Kumakura |
| Rok vydání: |
2003 |
| Předmět: |
|
| Zdroj: |
Scopus-Elsevier |
| DOI: |
10.2514/6.2003-4702 |
| Popis: |
The amplitude of discharge current oscillation has been measured for various hollow anode widths and axial positions using a 1kW class anode layer type Hall thruster. As a result, there was plasma density threshold for stable discharge. Structure of electrical sheath inside a hollow anode was numerically analyzed using fully kinetic 2D3V Particle -in-Cell (PIC) and Direct Simulation Monte Carlo (DSMC) method. The computed sheath area was not so sensitive to the hollow width. NOMENCLATURE B: magnetic induction D: anode hollow width E: electric field strength e: electronic charge I: electric current m: particle mass n: number density R: mean radius of the discharge channel S: anode surface area T: temperature t: time v: velocity V: voltage x: position Z: distance between anode tip and channel exit e 0: free space permeability λ D : Debye length µ: magnetic permeability τ : mean free time ϕ : space potential r, θ , z: cylindrical coordinate SUBSCRIPTS 0 : anode exit d : discharge e : electron i : ion n : neutral w : wall |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
