Abstract

A general purpose x-ray fluorescence spectrometer has been constructed that employs the focusing properties of large spherically curved crystals. The 10 cm × 10 cm single crystals are bent to a 63.5-cm radius of curvature, and ground to the 31.75 radius of curvature of the focal circle. A motor-driven remotely controlled interchange mechanism has positions for four of these crystals. Also provided are: interchange of gas flow proportional counter or scintillation counter, and of chromium or tungsten target x-ray tubes, and a wide range of entrance and detector slitwidth combinations. Resolution and sensitivity are greatly superior to those of flat crystal optics.

Doubly curved imaging Bragg crystal spectrometer for x-ray astronomy

Bjarne P. Byrnak, Finn E. Christensen, Niels J. Westergaard, and Herbert W. Schnopper
Appl. Opt. 24(16) 2543-2548 (1985)

Doubly curved crystal point-focusing x-ray monochromators: geometrical and practical optics

D. W. Berreman, J. Stamatoff, and S. J. Kennedy
Appl. Opt. 16(8) 2081-2085 (1977)

Ray-tracing the convex curved crystal x-ray spectrograph

Sidney O. Kastner
Appl. Opt. 18(3) 374-377 (1979)

Spherical crystal imaging spectrometer (SCIS) for cosmic x-ray spectroscopy

Herbert W. Schnopper and Paul O. Taylor
Appl. Opt. 19(19) 3306-3312 (1980)

Ultra-thin curved transmission crystals for high resolving power (up to E/ΔE = 6300) x-ray spectroscopy in the 6–13  keV energy range

John F. Seely, Lawrence T. Hudson, Jack L. Glover, Albert Henins, and Nino Pereira
Opt. Lett. 39(24) 6839-6842 (2014)