From a measurement of the dynamic pressure on the Plasma, h o, and its composition, x o, the plasma temperature can be calculated usingĪvailable thermophysical data. Water under sampling and tare flow conditions. DT sample and DT tare are the temperature rise of the cooling Where m w is the cooling water flow rate, Cp w is the specific heat for the water, m g is The specific enthalpy of the plasma isĭetermined through a measurement of the difference between the heat load on the probeĬooling circuit under sampling and tare conditions. Pressure, deionized, closed loop, water circuit. This consists essentially of a triple wall probe cooled by a high A briefĭescription is given in this paper of the use of enthalpy probes for the characterization ofĪ schematic of the setup used for enthalpy probe measurements in an induction plasma Probe techniques can not be used either for time-resolved measurements. Technique, with the probe inevitably causing a local perturbation of the flow.

Its main limitation, however, is that it is an intrusive Their main advantage is the simplicity of the technique, and its possible useįor the simultaneous measurement of multiple plasma parameters with a generallyĪcceptable special resolution. Simultaneous measurement of the locale specific enthalpy, velocity and composition of Theses are the langmuir and enthalpy probes. They have been getting a wider acceptance over the past ten years. des Sciences et Techniques, UniversitéĪlthough probe techniques have been available for many years for plasma diagnostics, Sherbrooke, Sherbrooke, Québec, Canada, J1K 2R1Ī Present address: Dept. Boulos 1ġ Plasma Technology Research Centre (CRTP), Dept. ENTHALPY PROBE DIAGNOSTIC STUDFY OF THE SUPERSONIC INDUCTION PLASMA JET

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