Combined Rowland circle device for spectrometer

Abstract

The invention relates to a combined Rowland circle device for a spectrometer. The invention aims to provide a combined Rowland circle on which a CCD (Charge Coupled Device) and a photomultiplier can be installed at the same time so as to realize that the CCD and the photomultiplier collect the spectral signals at the same time so that the analysis capability of a single spectrometer can be improved and the cost of the spectrometer can be reduced. The combined Rowland circle device for the spectrometer comprises a Rowland circle base, a Rowland circle bracket, a seam outgoing belt, at least one CCD module and at least one photomultiplier module. The Rowland circle bracket takes the shape of a circular arc; strip through holes are arranged at the left and the right of the front side face of the Rowland circle bracket; the circular arc-shaped seam outgoing belt is fixedly mounted on the front side face of the Rowland circle bracket; the upper surface and / or the lower surface of the Rowland circle bracket are / is provided with at least one positioning hole; the CCD module is fixedly installed in the positioning hole; the photomultiplier module is fixedly installed on the Rowland circle base and is located at the front side of the seam outgoing belt; and the spectral lines of the light spectra can pass through the strip through holes and the seam outgoing belt to shine on the photomultiplier.

Description

technical field [0001] The invention relates to a spectrometer, in particular to a mixed Rowland circle device of the spectrometer. Background technique [0002] Spectrometers are divided into photomultiplier tube spectrometers and CCD spectrometers. Photomultiplier tube spectrometers use photomultiplier tubes to collect spectral signals, and CCD spectrometers use CCD to collect spectral signals. Photomultiplier tubes can accurately analyze ultra-low content elements. A photomultiplier tube Only one spectral line can be collected. Due to the limited space in the optical chamber, too many photomultiplier tubes cannot be installed in one optical chamber, which limits the number of spectral lines that can be analyzed by a spectrometer. There are few types of metal materials that can be analyzed, and photoelectric The price of the multiplier tube is relatively expensive; CCD is cheap, and a CCD can collect nearly a hundred spectral lines, but the analysis of elements with low co...

AI Technical Summary

Problems solved by technology

[0002] Spectrometers are divided into photomultiplier tube spectrometers and CCD spectrometers. Photomultiplier tube spectrometers use photomultiplier tubes to collect spectral signals, and CCD spectrometers use CCD to collect spectral signals. Photomultiplier tubes can accurately analyze ultra-low content elements. A photomultiplier tube Only one spectral line can be collected. Due to the limited space in the optical chamber, too many photomultiplier tubes cannot be installed in one optical chamber, which limits the number of spectral lines that can be analyzed by a spectrometer. There are few types of metal materials that can be analyzed, and photoelectric The price of the multiplier tube is relatively expensive; CCD is cheap, and a CCD can collect nearly a hundred spectral lines, but the analysis of elements with low content is inaccurate; the advantages of using CCD to collect multiple spectral lines and the high sensitivity of photomultiplier tubes With the advantages of low detection limit, CCD and photomultiplier tubes can collect spectral data together in the same light chamber, which can ensure the accuracy of the instrument and increase the number of materials that can be analyzed by the instrument. However, there is currently no device that can be equipped with CCD and photomultiplier tubes at the same time

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