Adapters forming electromagnetic fields for heating toroidal plasma discharges at microwave frequencies

摘要

The present invention relates to an adapter for shaping an electromagnetic field which heats a toroidal plasma discharge. This is for use in plasma torches dedicated to excitation / ionization sources in spectrometers. The adapter consists of at least two electromagnetic field shaping elements (1) drawn between the upper bushing (2) of the microwave connection and the lower bushing (3) of the microwave connection to shape the electromagnetic field The element (1) is aligned at an angle of 0 to 90 degrees to the pitch surface of the bushing (2, 3). [Selected figure] Figure 2