Plasma generator
AssigneeU.S. Philips Corporation
InventorRene C. Durr
Life of this patent
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Abstract
In a plasma generator for high-frequency supply of an induction coil containing a plasma of an aerosol with a substance to be analyzed, quarter-wave conductors of a quarter-wave resonant system are incorporated in the apparatus after having been divided and folded, which provides a significant saving in space. Added to the conductors are electric auxiliary circuitry for balancing the resonant system and for matching the frequency to a filled induction coil. The conduction coil is capable of up and down movement in a disturbance-free manner, the coil always being maintained at zero potential.
Claims9
A plasma generator provided with an oscillator circuit having a tuned quarter-wave resonant system for generating a plasma discharge in an induction coil to be fed by the generator for heating an aerosol-containing material to be analyzed by means of a spectroscope, characterized in that active and passive quarter-wave conductors are subdivided by folding into a plurality of sections and for mutual balancing the active quarter-wave conductor is capacitively coupled to a high-frequency generator connected to ground potential.
Dependencies are inferred from the claim text.