Faculty of Physics, University of Vienna, Boltzmanngasse 5, A-1090 Wien, Austria.
Phys Rev Lett. 2010 Sep 17;105(12):123904. doi: 10.1103/PhysRevLett.105.123904.
We report a breakthrough in the search for versatile diffractive elements for cold neutrons. Nanoparticles are spatially arranged by holographical means in a photopolymer. These grating structures show remarkably efficient diffraction of cold neutrons up to about 50% for effective thicknesses of only 200 μm. They open up a profound perspective for next generation neutron-optical devices with the capability to tune or modulate the neutron diffraction efficiency.
我们在寻找多功能冷中子衍射元件方面取得了突破。通过全息手段，纳米粒子在光聚合物中实现了空间排列。这些光栅结构在有效厚度仅为 200 μm 的情况下，对冷中子的衍射效率非常高，达到了约 50%。它们为新一代具有调谐或调制中子衍射效率能力的中子光学器件开辟了广阔的前景。
