Diffraction effects on angular response of X-ray collimators

Details Diffraction effects on angular response of X-ray collimators Diffraction effects on angular response of X-ray collimators

Aug 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976rsci...47..899b&link_type=abstract

Review of Scientific Instruments, vol. 47, Aug. 1976, p. 899-905. ERDA-NASA-sponsored research.

Astronomy and Astrophysics

Astronomy

3

Collimators, X Ray Apparatus, X Ray Astronomy, X Ray Diffraction, Angular Distribution, Cosmic X Rays, Diffraction Patterns, K Lines, Pulse Amplitude, Ray Tracing, Solar X-Rays, X-Ray Diffraction And Scattering

Scientific paper

Angular responses have been measured for X-ray collimators with half-widths ranging from minutes of arc down to 10 arcsec. In the seconds-of-arc range, diffraction peaks at off-axis angles can masquerade as side lobes of the collimator angular response. Measurements and qualitative physical arguments lead to a rule of thumb for collimator design; namely, the angle of first minimum in the Fraunhofer single-slit diffraction pattern should be less than one-fourth of the collimator geometrical full-width at half-maximum intensity.

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