Optimization and Diagnostics of Plasma Flows in Hall Effect Plasma Accelerators.

Now there is more and more actual using of plasma thrusters such as SPT for communication satellites, longtime flights to Mars or asteroids, and also as traction satellites at start into elliptic orbits. The big efficiency of the engine (economy of a working body), a small corner of divergence of a flow and long duration of a resource is necessary for all these problems. SPT also are widely used in plasma technology. A number of parametrical laboratory models of the second generation SPTs in a power range from 50W up to 3kW which have the unique characteristics, which are not having analogues in the world engineering, is developed in MIREA [1]. For various tasks it is expedient to use various plasma-making gases. Thus there is a necessity to carry out optimization of a source work for the chosen working substance. For a choice of entrance parameters at work on various gases it is necessary to use criteria of scaling law [2]. According to the scaling law, an accelerator operating with the same working gas, but with different mass flow rates operates in the same (with respect to the global characteristics) mode if the value of the parameter α, b