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

<table>Dependence of the focusing factor <svg height="9.6499996" id="M178" style="vertical-align:-0.135pt" version="1.1" viewbox="0 0 10.6875 9.6499996" width="10.6875" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,9.65)">
<g transform="translate(72,-64.28)">
<text transform="matrix(1,0,0,-1,-71.95,64.46)">
<tspan style="font-size: 11.21px; " x="0" y="0">𝐺</tspan>
</text>
</g>
</g>
</svg> of a lens made of mosaic crystals of Cu(111) on the focal length <svg height="12.1" id="M179" style="vertical-align:-2.10374pt" version="1.1" viewbox="0 0 9.5874996 12.1" width="9.5874996" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,12.1)">
<g transform="translate(72,-62.32)">
<text transform="matrix(1,0,0,-1,-71.95,64.46)">
<tspan style="font-size: 11.21px; " x="0" y="0">𝑓</tspan>
</text>
</g>
</g>
</svg> for three different values of the mosaicity in two different energy bands: 90–110 keV (LE) and 450–550 keV (HE). Reprinted from [<a href="/journals/xroi/2010/215375/#B11">11</a>].</table>

X-Ray Optics and Instrumentation

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

Figure 10