One source that has helped me is the book Wavelength Tables that was published by MIT in 1969. It includes intensities in arc, spark, or discharge tube. I'm not sure if it is even available anymore, but I would be glad to check some wavelengths for you.
What type of OES do you use? I am...
I am having trouble obtaining reference materials containing tantalum with certified values. I am working on setting-up calibration curves on an optical emission spectrometer to test PH 17-4 materials.
Does anyone know where I could obtain CRM's with certified Ta values for this purpose?
