Laser Induced Optogalvanic Wavelength Calibration and Identification
First, the raw data is downloaded, fitted, and measured by using the Peak Identification module. Then the fitted peak positions, heights, and widths are stored as input data for the SCI module. Since the peak positions of the input data are uncertain due to an absence of calibration, it is desirable to set a larger tolerance manually. This will allow the computer to cover more lines contained in the selected data files and enhance the probability of identifying the input data. The graphs from the Peak Identification of the input data, the SCI of the identified results, and the spectral from the reference data file can be graphed on the same scale, and a composite graph can be viewed.
The one-to-one correlations among the three graphs are clearly demonstrated by the Peak Data Table and Line ID Table. They show the measured optogalvanic spectral lines and the identified spectral lines. As the values of the wavelength indicated in the tables, the raw data has an averaged "0.2 nm blue shift" relative to the referenced data. The results provide the quantitative wavelength calibration.