Spectrometer

Details Spectrometer Spectrometer

G - Physics

01

J

354/29, 73/55

G01J 3/02 (2006.01) G01J 3/28 (2006.01) G01J 1/42 (2006.01) G01N 21/67 (2006.01)

Patent

CA 1229239

ABSTRACT A spectrometer which comprises a light source for exciting a sample to be analyzed, and a monochromator whose intensity values, as detected at the output gap, are subjected to further processing in a computer, in conjunction with the associated wavelength values, for the purposes of achieving a large measuring range and a high degree of measuring accuracy, is provided with two secondary electron multipliers and a beam splitter which supplies the second secondary electron multiplier with only a small fraction of the radiation issuing from the monochromator. An electronic switch transmits to the computer, by way of an A-D converter, the output of that secondary electron multiplier whose output signal is within the analysable range of levels. The computer causes the monochromator to pass through the measuring range a plurality of times, and individually stores the measurement values which are then processed to form mean values.

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