Characterization of the General Electric CID-17 as a Detector for Plasma Emission Spectrometry.
ARIZONA UNIV TUCSON DEPT OF CHEMISTRY
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Rapid qualitative and quantitative elemental analysis of complex mixtures by optical emission spectrometry requires sensitive simultaneous multiwavelength detection. Until the present, this has been possible only by employing a number of discrete detectors. All types of detectors for plasma emission spectroscopy must meet a series of demanding requirements. Among these are high quantum yield over a wide wavelength range, low noise and a very wide dynamic range. The need for a multichannel detector which meets these requirements has long been recognized but only now satisfied. Studies have indicated that the Charge Injection Device CID-11B possesses characteristics which make it an ideal detector for atomic spectroscopy. The newer CID-17, having more detector elements and a device geometry which would suggest an enhanced ultraviolet response, was a logical choice for continued research in this area. An array camera system based on this device has been designed, constructed and evaluated in this laboratory. It has been found to meet all the requirements for use as a detector for plasma emission spectrometry and over some wavelength ranges to be far superior to photomultiplier tubes. With almost 100,000 channels, true multiwavelength detection is obtained making a new wealth of information available to the analytical chemist.
- Atomic and Molecular Physics and Spectroscopy
- Plasma Physics and Magnetohydrodynamics