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Proceedings Paper

Stigmatic Flat Fields Polychromators
Author(s): M. Pouey
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Paper Abstract

Actual flat field spectrometers suffer from a large amount of defect of focus. This is due to the fact that the object is actually located on the tangential focus, the detector being on the sagittal one. This is not the case if both the source and the detector are on the perpendicular to the grating normal at the sagittal curvature center. Astigmatism, sagittal coma and astigmatism vanish for any wavelengths, aplanetic solutions occurring for cylindrical (i = 73°39), spherical (i = 9°45) or toroidal (i = 28°5) gratings.

Paper Details

Date Published: 27 November 1989
PDF: 1 pages
Proc. SPIE 1140, X-Ray Instrumentation in Medicine and Biology, Plasma Physics, Astrophysics, and Synchrotron Radiation, (27 November 1989); doi: 10.1117/12.961849
Show Author Affiliations
M. Pouey, Univ. Paris (France)


Published in SPIE Proceedings Vol. 1140:
X-Ray Instrumentation in Medicine and Biology, Plasma Physics, Astrophysics, and Synchrotron Radiation

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