Abstract
In this work a computer code called P RIMA was further developed and utilized to study the motion of primary electrons in a two -dimensional, axisymmetric discharge chamber of an ion engine. Primary electrons are key to ion engine performance in that they produce the ions that produce the thrus t. Maxwell equations are solved to determine the magnetic field and the equations of motion are solved to determine the trajectory of the primary electrons. A study was conducted to gain insights as to what constitutes a good magnetic field. This was done by looking at three types of ideal magnetic fields and several, ring -cusp configurations. The actual discharge chamber design parameters studied are the discharge chamber shape and the number of magnetic rings.
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