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首页> 外文期刊>Physica, B. Condensed Matter >Space technology from X-ray telescopes for focusing SANS and reflectometry
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Space technology from X-ray telescopes for focusing SANS and reflectometry

机译：X射线望远镜的空间技术用于聚焦SANS和反射仪

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Presently high-resolution instruments for small-angle neutron scattering use the conventional pinhole collimation. For high resolution these instruments have to be extremely long (80 m for D11). Much shorter instruments with high resolution and better intensity can be built with focusing mirrors. The high-quality mirrors, which were developed for the X-ray telescope ROSAT, served as prototypes for our neutron imaging mirrors. Recently we succeeded in building a 20 m long focusing instrument at the ILL in Grenoble. The image has a very low parasitic halo. Aberrations are mainly due to gravity. Test experiments on polymeric precipitates down to Q = 4 * 10~(-4) A~(-1) were successfully carried out. In Julich we now are building a focusing SANS-instrument and reflectometer with major geometrical improvements of the mirror design. For the SANS-instrument, a Q-range down to Q = 10~(-4) A~(-1) is expected. For the reflectometer, a perpendicular Q_(perpendicular)-range between 10~(-2) A~(-1) < Q_(perpendicular) < 10~(-1) A~(-1) is envisaged, with a #DELTA#Q_(perpendicular) resolution of about #DELTA#Q_(perpendicular) = 10~(-2) A~(-1).
机译：目前，用于小角度中子散射的高分辨率仪器使用常规的针孔准直仪。为了达到高分辨率，这些仪器必须非常长（D11为80 m）。使用聚焦镜可以制造出分辨率更高，强度更高的更短的仪器。为X射线望远镜ROSAT开发的高品质镜面是我们中子成像镜面的原型。最近，我们成功地在格勒诺布尔的ILL制造了一个20 m长的聚焦仪。图像的寄生光晕非常低。像差主要是由于重力。成功地对低至Q = 4 * 10〜（-4）A〜（-1）的聚合物沉淀物进行了实验。在朱利希，我们现在正在构建聚焦型SANS仪器和反射计，对反射镜设计进行了重大的几何改进。对于SANS仪器，期望Q范围低至Q = 10〜（-4）A〜（-1）。对于反射计，设想垂直Q_（垂直）范围在10〜（-2）A〜（-1）

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