Observation of anomalous shift of x-ray wave packet by deformed crystal set near the Bragg reflection condition and its application to x-ray wave guides

我们通过实验证明了x射线束在变形硅晶体中几乎平行于衍射面并具有mm级距离的增强平移。附近的布拉格反射和晶体中的应变场相结合，使得x射线束的位移按波长的平方缩放。为了进一步精确控制x射线光束，采用了异质外延晶体界面附近的原子应变。通过将x射线照射到顶部有数千个量子点的界面上，观察到x射线被分成两个方向，两个方向都在数百个量子点下反复转换。

We experimentally demonstrated an enhanced translation of an x-ray beam nearly parallel to the diffracting planes with mm order distance in a deformed silicon crystal. The combination of a nearby Bragg reflection and a strain field in the crystal allows a shift in the x-ray beam that scales as square of wavelength. For further precise control of x-ray beams, the atomic strain near the interface of hetero-epitaxial crystal was used. By illuminating x-rays onto the interface having thousands of quantum dots on the top, the x-rays were observed to be split into two directions both of which were repeatedly translated under hundreds of quantum dots.