Crystal diffraction lenses for imaging gamma-ray telescope

Details Crystal diffraction lenses for imaging gamma-ray telescope Crystal diffraction lenses for imaging gamma-ray telescope

Jun 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987reas.symp.....s&link_type=abstract

Presented at the 13th Texas Symposium on Relativistic Astrophysics, Chicago, Ill., 25 Dec. 1986

Astronomy and Astrophysics

Astrophysics

Gamma Ray Telescopes, Imaging Techniques, Semiconductor Devices, Spectroscopic Telescopes, Crystals, Efficiency, Lenses

Scientific paper

Recent developments in the design of crystal diffraction lenses has made it possible to build a gamma-ray telescope that produces a real image of a distant object. This can be done both with surface diffraction optics and with transmission diffraction optics. The mathematical solution to both cases is the same but they differ in the way the crystals are cut and bent. Until recently, there was no solution for the transmission case. It is this last case that will be highlighted in this paper, because it is new and because it makes much more efficient use of the crystal material when high energy photons (greater than 50 keV) are being focused.

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