A compact of self-contained portable system has been designed to diagnose the edge plasma of devices with a wide range of sizes and configurations. The system is capable of measuring mean and fluctuation quantities of density, temperature, potential from a standardized Langmuir probe array using a fast reciprocating probe drive, but can also be used for other fluctuation sources, e.g., magnetic probes. The signal processing software allows an immediate analysis of the turbulent characteristics. The results are stored in a database. The portable device is available for collaborative measurements with the goal of allowing cross-device comparison of edge fluctuation characteristics and transport.
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Ritz et al. (1990) studied this question.
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