Measurements of SMART-1 plasma environment with the EPDP Langmuir probe

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SMART-1 is the first spacecraft of the European Space Agency using a plasma engine as a main propulsion system. SMART-1 successfully reached a moon orbit in December 2004. It is also equipped with various plasma diagnosis instruments to study the electrostatic environment of the thruster and its potential impact on the spacecraft. Measurements from the EPDP plasma instruments are analyzed when the electric thruster is operated and calibration is performed by comparing with other instruments. Characteristics from the charge exchange plasma are presented and it is shown that the spacecraft potential is floating within 10-30 volts negative with respect to the plasma.

資料番号: AA0049206040

レポート番号: JAXA-SP-05-001E

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