Patton Forest S, Deponte Daniel P, Elliott Greg S, Kevan Stephen D
Department of Physics, University of Oregon, Eugene, Oregon 97403-1274, USA.
Phys Rev Lett. 2006 Jul 7;97(1):013202. doi: 10.1103/PhysRevLett.97.013202.
We have developed a nozzle source that delivers a continuous beam of atomic helium or molecular hydrogen having a high degree of transverse coherence and with adequate optical brightness to enable new kinds of experiments. Using this source we have measured single slit diffraction patterns and the first ever speckle-diffraction patterns using atomic and molecular de Broglie waves. Our results suggest fruitful application of coherent matter beams in dynamic scattering and diffractive imaging at short wavelength and with extreme surface sensitivity.
我们开发了一种喷嘴源，它能产生具有高度横向相干性且具有足够光学亮度的连续原子氦束或分子氢束，以开展新型实验。利用该源，我们使用原子和分子德布罗意波测量了单缝衍射图样以及有史以来首个散斑衍射图样。我们的结果表明，相干物质束在短波长且具有极高表面灵敏度的动态散射和衍射成像中有着丰硕的应用前景。
