Wave-particle diagnostics for plasma simulation |
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Authors: | Viktor K Decyk |
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Institution: | (1) Dept. of Physics, University of California, 405 Hilgard Avenue, 90024 Los Angeles, CA, USA |
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Abstract: | One important type of problem for particle simulation of plasmas, is one which is bounded and has external sources and sinks.
For example, there are problems with antennas for studying RF heating or current drive in fusion plasmas, or problems in space
simulation where particles are injected at one boundary with some specified energy or momentum distribution. In understanding
such simulation results, it is useful to know how energy and momentum are flowing inside the plasma. This can be accomplished
in electrostatic particle simulations on the basis of some theorems for energy and momentum flow. An important application
of these theorems occurs when many waves are involved in producing some effect, e.g., generating a current by RF. One can
then extract the contribution of each wave to the effect to identify which are most important. Examples of such wave-particle
diagnostics will be given. |
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Keywords: | |
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