Applications of the zeeman effect to analytical atomic spectroscopy--IV: capacitively-coupled radiofrequency spectral sources.
A magnetically-stable spectral source is described in which a radiofrequency plasma is generated within a single hollow-cathode electrode. Power is coupled to the plasma by placing metal electrodes at the radiofrequency supply potential, around the outside of the lamp-casing. The sources are simple to build, and the capacitive power-coupling technique is convenient for generating a plasma at any desired point within the envelope. The performance of the sources is compared with that of the corresponding commercial hollow-cathode lamps driven from a direct current supply.
Stephens
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Trace Analysis Research Centre, Department of Chemistry, Dalhousie University, Halifax, Nova Scotia, Canada.