Effect of resolution on the wavelength determination of a putative standard to be used for near infrared diffuse reflection spectra measured on grating spectrometers

摘要: Diffuse reflection (DR) Fourier transform near infrared spectra of a powdered mixture Er 2 O 3 , Dy Ho and talc were measured at constant resolution least cm - 1 on four different combinations spectrometers sampling accessories. The wavenumber scale each these was corrected with lines in the vibration-rotation spectrum water vapour so that accuracy better than 0.02 . DR sample then calculated constant-wavelength to simulate would have been grating monochromator. precision bands this estimated. It is believed reported positions putative wavelength standard about ten times corresponding values HO had previously by US National Institute Standards Technology.