PPT-. Diffraction II

Physics 2415 Lecture 38 Michael Fowler UVa Todays Topics Multislit interference The diffraction grating spectra Waves and particles more diffraction Radio astronomy Light Intensity Pattern from Two Slits. Textbook sections 28-4 – 28-6. Physics 1161:. . . Lecture 21. Recall. Interference . (at least 2 coherent waves). Constructive (full wavelength difference). Destructive (½ wavelength difference). Guanghui Zhu. Instrument Report:. Contents. Diffraction Mechanism. C. onstruction . of . the . Diffractometer. Applications . of . XRD. Data . A. nalysis . and . Explanation. 2D XRD. XRD Simulation. Diffraction . Pg. 459 - 461. Properties of Waves. In order to study the properties of waves, a ripple tank is used. A shallow, glass-bottomed tank on left. ~2cm of water is added. Light from a source above the tank passes through the water and illuminates a screen on the table below. Chapter. 36. Copyright © 2014 John Wiley & Sons, Inc. All rights reserved.. 36-1. Single-Slit Diffraction. 36.01 . Describe the diffraction of light waves by a narrow opening and an edge, and also describe the resulting interference pattern.. Presented by. :. Panos. Economou. P.E. . Mediterranean Acoustics Research and Development. , Cyprus. . Panagiotis. . Charalampous. . P.E. Mediterranean Acoustics Research and Development, . Cyprus. Martin Centurion. Department of Physics and Astronomy. University of Nebraska – Lincoln. 1. Outline. 2. Diffraction from aligned molecules:. 3D molecular images with sub-Angstrom resolution. Imaging of transient structures: Molecules in intense laser fields.. Zone plate. Laser-beam . diffraction. A lens transforms a Fresnel . diffraction problem to a . . Fraunhofer. diffraction problem.. The lens as a Fourier transformer. Diffraction gratings & spectrometers. Jonathan Cowen. Swagelok . Center for the Surface Analysis of Materials. Case School of Engineering. Case Western Reserve University. . October 27, 2014. . . Outline. X-ray Diffraction (XRD). History and background. Learning Goals for Chapter 36. Diffraction. vs. . Interference. Single-slit vs. Multiple-slit diffraction. Calculating intensity . at . points . in . single-slit pattern. .. X. -ray . diffraction reveals . History. 1895. Wilhelm Conrad R. ӧ. ntgen. discovered . X-rays. 1905 . Albert Einstein introduces the concept of photons (concept not accepted until 1922). 1913 . Max von . Laue, . Walter Friedrich . 36-1. Single-Slit Diffraction. 36.01 . Describe the diffraction of light waves by a narrow opening and an edge, and also describe the resulting interference pattern.. 36.02 . Describe an experiment that demonstrates the Fresnel bright spot.. Instrument Report:. Contents. Diffraction Mechanism. C. onstruction . of . the . Diffractometer. Applications . of . XRD. Data . A. nalysis . and . Explanation. 2D XRD. XRD Simulation. Diffraction . Mechanism. Derek A. Wann. University of Edinburgh. Workshop on Ultrafast Electron Sources. UCLA. 14. th. December . 2012. . Acknowledgements. Funding:. Stuart . Young. Matthew. Robinson. Paul. Lane. Overview. Philospher’s. Stone of Electron Crystallography?. Focus. Many methods exist for obtaining diffraction information. Selected Area. Nanodiffraction. and variants. CBED. All are complicated to interpret.