Absolute line intensities and self-broadening coefficients in the ν3 − ν1 band of carbon dioxide

► Absolute line intensities in the ν3 − ν1 of 12CO2 and 13CO2 were measured accuracy. ► Self-broadenings of lines in the ν3 − ν1 of 12CO2 and 13CO2 were measured accuracy. ► The line parameters were measured by high resolution diode-laser spectroscopy. ► The line parameters were deduced from Voigt fits, as well as Rautian-Sobel'man fits. ► The band strengths and Herman-Wallis factors were determined by least-square fits.