1. Low-energy X-rays of wavelength 1.0×10−10 m are incident on a diffraction grating labelled 600 lines mm−1 . Show that the diffraction grating would not produce an interference pattern that could be observed with an X-ray detector.
(1) Low-energy X-rays of wavelength 1.0×10−10 m are incident on a diffraction grating labelled 600 lines mm−1 . Show that the diffraction grating would not produce an interference pattern that could be observed with an X-ray detector.
(2) The same low-energy X-rays are now incident on a thin crystal, where the regular lattice spacing of the atoms in the crystal is about 0.3 nm. Show that an interference pattern could now be observed.
(3) How might such observations as those in part b give us useful information about crystals?