Publication Date:
2019-06-28
Description:
The ray-tracing results presented characterize the theoretically achievable EUV performance of the HiRES instrument. The effects of optical system misalignment on spectrograph images, and the laboratory results for two f/15 toroidal diffraction gratings that employ a multianode microchannel array, are also presented. Interferometric studies of toroidal figure accuracy, as well as optical and electron microscopy investigations of surface quality, are discussed. While the current toroidal gratings are noted to furnish good imaging across a wide wavelength range, they exhibit excessive EUV scatter, as well as spectral ghosting.
Keywords:
OPTICS
Type:
In: Ultraviolet technology IV; Proceedings of the Meeting, San Diego, CA, July 20, 21, 1992 (A93-34426 13-35); p. 218-230.
Format:
text
Permalink