Light stray

1 Work, W.J., Horie, K, Hess, M., and Stepto, R.F.T. (2004) Definitions of terms related to polymer blends, composite, and multiphase polymeric materials. Pure Appl. Chem, 76, 1985-2007. 

2 Shonaike, G.O. and Simon, G.P. (1999) Polymer Blends and Alloys, Marcel Dekker, New York, pp. 263-451, part 11. 

3 Sanchez, l.C. and Stone, M.T. (2000) Statistical Thermodynamics of Polymer Solutions and Blends, vol. 1 (eds C.B. Bucknall and D.R Paul), John Wiley Sons, New York, pp. 15-55, Chapter 2. 

4 Utracki, L.A. (2002) Polymer Blends Handbook, vol. 1 (ed. L.A. Utracki), Muwer Academic, The Netherlands, pp. 1-96, Chapter 1. 

6 Robeson, L.M. (2007) Polymer Blends A Comprehensive Review, Hanser, Ohio, pp. 11-54, Chapter 2. 

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A second instrumental limitation to Beer s law is stray radiation. The following data were obtained using a cell with a pathlength of 1.00 cm, when stray light is insignificant... 

The two complicating factors that are encountered most frequently are the linearity of detector response and stray light scattering at low signal levels. DTGS... 

The monochronomator in a Raman spectrometer must have excellent stray light and resolution characteristics. 

A detachable monochromator (19) developed by Spex Industries, was another approach in minimizing stray light. It is a modified Czerny-Turner spectrograph which can be coupled to the exit slit of a double monochromator and function as a variable bandpass, variable frequency filter. This accessory, while providing the versatility of a triple monochromator, does not add much mechanical and optical complexity and can be removed when not wanted. 

Spectrometer Resolution (cm-1) Stray light Type Focal length (m) Gratings ... 

Baffling, reduction of stray light implied by the availability of intermediate foci and pupil images ... 

Figure 2. Optical schematic of the chamber for grazing angle measurements. Heaters and one thermocouple are located directly behind the sample (A). Gas inlet and outlet are near the IR transmitting windows (B). The mirrors (C) can be rotated and tilted to maximize signal and eliminate stray light. The entire cell (D) can be translated to change the angle of incidence.

Figure 27-1 Six samples worth of spectra with two bands, without (left) and with (right) stray light, (see Color Plate 1)...

Figure 27-2 Absorbance versus concentration, without (upper) and with (lower) stray light.

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