Spectrometer Czerny-Turner monochromator

Figure 21 -25 A Cd line at 228.802 nm causes spectral interference with the As line at 228.812 nm in most spectrometers. With sufficiently high resolution, the two peaks are separated and there is no interference. The instrument used for this spectrum has a 1-m Czerny-Turner monochromator (Figure 20-5) with a resolution of 0.005 nm from 160 to 320 nm and 0.010 nm from 320 to 800 nm. [Courtesy Jobin Yvon Horiba Group. Longjumeau Cedex. France.]...

Figure 1 Drawing of single-channei Raman spectrometer showing Czerny-Turner type doubie monochromator. Coiiecting optica for scattered beam are not shown.

The spectrometers used are adapted either for sequential or simultaneous multi-element measurements. Commonly used grating spectrometers in plasma AES include (i) spectrometers with the Paschen-Runge mount, (ii) echelle spectrometers, (iii) spectrometers with Ebert and Czerny-Turner mounts, (iv) spectrometers with Seya-Namioka mounts, and (v) double monochromators. Also Fourier transform spectrometers may be used in plasma AES. 

The dispersive system The earliest ROA spectrometers were of the scanning type and used Czerny-Turner double monochromators. It took weeks to... 

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