Heiney, Paul A.
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Publication 5.4 - Porod, Guinier, and Kratke Plots(2016-08-05) Heiney, Paul A.Different ways of representing SAXS data. Porod plots pull out high-Q features on a linear scale. Guinier plots can be used to extract the radiation of gyration. Kratke plots can help distinguish between extended and compact conformations of chains such as proteins. Time 6:44.Publication 2.2 - Synchrotron Radiation(2016-04-14) Heiney, Paul A.Synchrotron radiation produced by accelerating charge in a magnetic field. Spectrum and beam shape of synchrotron radiation. Critical comparison of tube and synchrotron sources. Time 6:36.Publication 7.3 - Introduction to Neutron Scattering(2016-08-25) Heiney, Paul A.Wave nature of the neutron. Comparison of neutrons, X-rays for diffraction. Neutron scattering cross sections. Coherent and incoherent scattering. Time 6:00.Publication 2.3 - Synchrotron Radiation Sources(2016-04-20) Heiney, Paul A.General description of facilities for producing synchrotron radiation. The Advance Photon Source. Wigglers and undulators. Synchrotron sources in the U.S. and worldwide. Time 5:23.Publication 2.1 - X-ray Tubes(2016-04-14) Heiney, Paul A.Production of electromagnetic radiation, and description of light as photons. Description of traditional X-ray tubes. Spectrum of X-ray radiation from a tube source. Rotating anodes, microfocus sources. Time 8:08.Publication 2.4 - Collimation Optics(2016-04-20) Heiney, Paul A.Approaches to producing collimated, monochromatic beams: pinholes, slits, monochromators, filters, mirrors, confocal optics. Goniometers for orienting samples. Time 7:42.Publication 3.8 - Limitations to X-ray Crystallography(2016-07-25) Heiney, Paul A.Limitations of crystallography due to: powder samples, finite angular range, the phase problem. Common solutions to these problems. Time 7:02.Publication 4.3 - Smectic Liquid Crystals and Lamellar Polymers(2016-08-02) Heiney, Paul A.General features of layered soft materials such as smectic liquid crystals and lamellar polymers. Identification of lamellar phases. What you can learn from peak intensities. Time 4:53.Publication 8.5 - Applications of X-ray Attenuation(2016-09-01) Heiney, Paul A.Effect of beam attenuation going through the sample in an X-ray scattering measurement. Transmission and sample thickness. Design of shielding. Effect of shorter wavelengths ("harmonic contamination.") Time 7:35.Publication 8.1 - Introduction to Radiation Safety(2016-08-29) Heiney, Paul A.Units and quality factors for radioactive sources and doses. How serious are different dosages? Time 7:48.