Thermal radiofrequency induction

Hydrogen Cyanide Synthesis in a Thermal Radiofrequency Induction Plasma... 

Radiofrequency Induction Plasma. One convenient approach to achieve the required temperatures in excess of 10,000 °K. at atmospheric pressure is generation of a thermal plasma by radiofrequency induction heating. The techniques for generating and containing a stable high-temperature induction plasma have been described in detail by Reed (32, 33), Mironer (25), Marynowski and Monroe (24), Freeman and... 

Non-Thermal Radiofrequency Discharges Capacitive and Inductive Coupling of Plasma... 

The method of choice for the preparation of Pa metal is a somewhat modified van Arkel-De Boer process, which uses protactinium carbide (Section II,C) as the starting material. The carbide and iodine are heated to form protactinium iodide, which is thermally dissociated on a hot filament 12-15). An elegant variation is to replace the filament with an inductively heated W or Pa sphere 109). A photograph of a 1.4-g sample of Pa metal deposited on a radiofrequency-heated W sphere is shown in Fig. 6. From the analytical data presented in Table V, the impurities present before and after application of this modified iodide transport process (Sections II,D and III,C) can be compared. 

Radiofrequency arc (RF arc) has also been used for removzd of particles of material from the sample surface. In this system a modified ICP torch is used, and the sample is in electrical contact with a ground copper base. The base is water-cooled and argon flow is introduced at the base. A stable filament from the plasma forms between the induction region and the sample, when the plasma discharge is initiated. Boron nitride is used as thermal and electrical insulator between the base and the RF arc. 

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