Periodic wavelength dispersion in a scanning UV monochromator
- 15 May 1981
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 20 (10) , 1781-1784
- https://doi.org/10.1364/ao.20.001781
Abstract
An analysis has been made of some wavelength dispersion problems associated with the McPherson model 225 1-m VUV scanning monochromator. The measurements show a periodic error in the dispersion of such a monochromator, refocussed for a fast-ion beam light source. They indicate a wavelength error from this source of up to ±0.1 Å with a period of 25 Å, this latter corresponding to one rotation of the grating drive screw.Keywords
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