Microwave plasma spectrometer using dielectric resonator
First Claim
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1. A spectrometer comprising a plasma generator, the plasma generator comprising:
- a dielectric resonator structure of dielectric material extending around a central axis;
a port for introducing gas and a material to be studied into a region adjacent the dielectric resonator structure; and
a radiofrequency power source electrically coupled to the dielectric resonator structure to promote an alternating polarization current flow at a natural resonant frequency of the dielectric resonator structure and directed circumferentially about the central axis along a continuous circular path within the dielectric material of the dielectric resonator to generate plasma in the gas to interact with the material to be studied.
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Abstract
A dielectric resonator is excited at its natural resonant frequency to produce a highly uniform electric field for the generation of plasma. The plasma may be used as a desolvator, atomizer excitation source and ionization source in an optical spectrometer or a mass spectrometer.
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Citations
31 Claims
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1. A spectrometer comprising a plasma generator, the plasma generator comprising:
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a dielectric resonator structure of dielectric material extending around a central axis; a port for introducing gas and a material to be studied into a region adjacent the dielectric resonator structure; and a radiofrequency power source electrically coupled to the dielectric resonator structure to promote an alternating polarization current flow at a natural resonant frequency of the dielectric resonator structure and directed circumferentially about the central axis along a continuous circular path within the dielectric material of the dielectric resonator to generate plasma in the gas to interact with the material to be studied. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification