Spectroscopic Instrumentation by Thomas Eversberg & Klaus Vollmann

Author:Thomas Eversberg & Klaus Vollmann
Language: eng
Format: epub
Publisher: Springer Berlin Heidelberg, Berlin, Heidelberg

Fig. 7.21Construction of the Rowland circle (Hutley 1982)

Spherical concave gratings show massive astigmatism when used on the Rowland circle. Therefore, a point source is imaged as a line. However, the foci of the meridional plane and the sagittal plane are different (Fig. 3.​8). Thus, choosing the correct plane with respect to the dispersion direction, astigmatism can be completely eliminated. A common variant is the Wadsworth system (Fig. 7.22f). In this configuration, the incident light is collimated, so that r in the focus equation 7.28 is taken as infinity. This is then

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.