| 摘要 |
A multi-electrode plasma source for maintaining a plasma loop for heating a stream of sample material traveling along a predetermined path through the loop. Included is at least one set of at least three spaced-apart electrodes having tips circumferentially distributed about such a stream path. Voltages are applied to the electrodes and plasma gas is directed into the region of the tips. The tip distribution, voltages and plasma gas flow are appropriate to generate electrical plasma generally surrounding the path.
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