Focusing effect of bent GaAs crystals for γ-ray Laue lenses: Monte Carlo and experimental results

被引：0
|
作者：
E. Virgilli
F. Frontera
P. Rosati
E. Bonnini
E. Buffagni
C. Ferrari
J. B. Stephen
E. Caroli
N. Auricchio
A. Basili
S. Silvestri
机构：
[1] University of Ferrara,Department of Physics
[2] CNR-IMEM Institute,undefined
[3] INAF/IASF via Piero Gobetti,undefined
来源：
Experimental Astronomy | 2016年 / 41卷
关键词：
Laue lens; Astrophysics; Bent crystals; Hard X-ray telescopes; X-ray diffraction;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We report on results of observation of the focusing effect from the planes (220) of Gallium Arsenide (GaAs) crystals. We have compared the experimental results with the Monte Carlo simulations of the focusing capability of GaAs tiles performed with a dedicated ray-tracer. The GaAs tiles were bent using a lapping process developed at the cnr/imem - Parma (Italy) in the framework of the laue project, funded by ASI, dedicated to build a broad band Laue lens prototype for astrophysical applications in the hard X-/soft γ-ray energy range (80-600 keV). We present and discuss the results obtained from their characterization, mainly in terms of focusing capability. Bent crystals will significantly increase the signal to noise ratio of a telescope based on a Laue lens, consequently leading to an unprecedented enhancement of sensitivity with respect to the present non focusing instrumentation.
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页码：307 / 326
页数：19
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