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Unformatted text preview: Assistant: Sla SER Met E 206 Materials Laboratory Crystallography and X-Ray Experiment Report Hakan Aktulga 1393875 Objective : The aim of this experiment is to determine the atomic arrangement, crystal structure and bravais lattice of any unknown material by means of an X-Ray Diffractometer . Apparatus and Sample Used : Unknown sample X-Ray Diffractometer 2 vs. Intensity graph Theory : Crystal structures of elements can be classified as crystal systems. There are seven crystal systems which are made up of different lattice parameters (Unit cell edge lengths and interaxial angles). We can determine these crystal systems by using X-ray diffraction. Diffraction occurs when a wave encouters a series of regularly spaced obstacles, that are capable of scattering the wave, and have distance between themselves comparable in magnitude to the wavelengths. In addition, waves should have a certain phase relation between themselves. A diffracted beam may be defined as a beam composed of a large number of scattered rays mutually reinforcing one another. In diffraction, the reflection angle (, interplanar spacing in cubic system (d hkl ) or wave length ( can be found by using...
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- Spring '11