Curved focusing crystals for hard X-ray astronomy

Journal Article · Sun Dec 15 00:00:00 EST 2013 · Crystallography Reports

DOI:https://doi.org/10.1134/S1063774513070079· OSTI ID:22311412

Buffagni, E.; Bonnini, E. ^[1]; Korytar, D. ^[2]

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1. IMEM-CNR Institute, Parma (Italy)
2. Institute of Electrical Engineering — SAS (Slovakia)

A lens made by a properly arranged array of crystals can be used to focus x-rays of energy ranging from 30 to 500 keV for x-ray astronomy. Mosaic or curved crystals can be employed as x-ray optical elements. In this work self standing curved focusing Si and GaAs crystals in which the lattice bending is induced by a controlled damaging process on one side of planar crystals are characterized. Diffraction profiles in Laue geometry have been measured in crystals at x-ray energies E = 17, 59 and 120 keV. An enhancement of diffraction efficiency is found in asymmetric geometries.

• OSTI ID: 22311412
• Journal Information: Crystallography Reports, Vol. 58, Issue 7; Other Information: Copyright (c) 2013 Pleiades Publishing, Inc.; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7745
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
ASYMMETRY
CRYSTALS
DIFFRACTION
EFFICIENCY
GALLIUM ARSENIDES
HARD X RADIATION
LAUE METHOD
OPTICS
SILICON