Curved focusing crystals for hard X-ray astronomy

被引：0
|
作者：
C. Ferrari
E. Buffagni
E. Bonnini
D. Korytar
机构：
[1] IMEM-CNR Institute,Physics Department
[2] Parma,undefined
[3] Parma University,undefined
[4] Institute of Electrical Engineering — SAS,undefined
来源：
Crystallography Reports | 2013年 / 58卷
关键词：
GaAs; Crystallography Report; Diffraction Efficiency; Diffraction Profile; GaAs Crystal;
D O I：
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中图分类号：
学科分类号：
摘要：
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.
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页码：1058 / 1062
页数：4
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