ホールスラスタにおける放電振動の一次元数値解析  [in Japanese] One-Dimensional Numerical Calculation of Discharge Current Oscillations in a Hall Thruster  [in Japanese]

Access this Article

Search this Article

Author(s)

Abstract

A one-dimensional numerical simulation was conducted inside an anode layer type Hall thruster in order to clarify the nature of low frequency discharge oscillation in Hall thrusters. The model assumed quasi-neutrality, Maxwellian electron distribution, and classical and Bohm diffusions across magnetic field lines. Heavy species were simulated using Particle-in-Cell (PIC) method, and electrons were dealt as fluid continuum. Generalized Ohm’s law was used to determine the electric potential, and an electron energy equation was solved to determine the electron temperature. As a result, we obtained discharge oscillations which were caused by ionization instability. The calculated current, its oscillations, and the stable operation range agreed with measured ones. We also succeeded to simulate the transition from the classical diffusion mode to Bohm diffusion mode by the calculation. In the discussion, it is shown that the electron energy given by the electric field has the large effect on the current oscillation.

Journal

  • JOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

    JOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES 55(638), 130-134, 2007

    THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

Codes

  • NII Article ID (NAID)
    130000147094
  • NII NACSIS-CAT ID (NCID)
    AA11307372
  • Text Lang
    JPN
  • ISSN
    1344-6460
  • NDL Article ID
    8746768
  • NDL Source Classification
    ZN25(科学技術--運輸工学--航空機・ロケット)
  • NDL Call No.
    Z74-B503
  • Data Source
    NDL  J-STAGE 
Page Top