Transcription of Chapter 3 Basic Plasma Physics - NASA
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Chapter 3 Basic Plasma Physics - NASA
37 Chapter 3 Basic Plasma Physics Introduction Electric propulsion achieves high specific impulse by the acceleration of charged particles to high velocity. The charged particles are produced by ionization of a propellant gas, which creates both ions and electrons and forms what is called a Plasma . Plasma is then a collection of the various charged particles that are free to move in response to fields they generate or fields that are applied to the collection and, on the average, is almost electrically neutral. This means that the ion and electron densities are nearly equal, ni ne, a condition commonly termed quasi-neutrality.
ionization of a propellant gas, which creates both ions and electrons and forms what is called a plasma. Plasma is then a collection of the various charged particles that are free to move in response to fields they generate or fields that are applied to the collection and, on the average, is almost electrically neutral.
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