Abstract
In the article, new Dunham coefficients of the CO molecule in the X1Σ+ state are determined on the basis of the energy data for high vibrational–rotational levels. A comparison of the predicted values of the vibrational terms and the centers of vibrational–rotational transitions with experimental data for different sets of Dunham coefficients showed the reliability of the coefficients found. The centers of CO laser lines formed by transitions from high-energy vibrational–rotational levels are calculated. Modeling of the absorption spectral characteristics of NO, N2O, and NO2 is carried out. It is confirmed that the emission spectrum of a CO laser within a wide spectral region significantly depends on a number of factors (for example, characteristics of laser optical elements, mechanisms of broadening, and shifts of the working levels of laser transitions), which leads to variations in the values of the centers and widths of the laser lines and, as a consequence, to different values of transmission of CO laser radiation by gaseous compounds on the same laser lines.
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