X-Ray Optics and Instrumentation / 2010 / Article / Fig 18

Review Article

Laue Gamma-Ray Lenses for Space Astrophysics: Status and Prospects

Figure 18

Recorded spectra for various source distances (lower graph). The upper graph represents the distance of the source as a function of diffracted energy. The vertical lines show the theoretical corresponding energies. 14.162 m corresponds to the tuning distance (Eth = 122.29 keV). The measurement at 22.52 m (Eth = 136.5 keV) was performed on the optical bench at CESR with a partially tuned lens. 205 m is the distance of the generator on the long distance test range (Eth = 165.5 keV). The peak for an infinite distance is taken from the stratospheric flight of June 2001.
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