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Crystals – Chemistry on the Atomic Level
Crystals – Chemistry on the Atomic Level

... Crystals – Chemistry on the Atomic Level Crystals are solid materials made up of a repetition of atoms or molecules. Crystals are identified by regular shapes and well-defined faces. Early scientists noticed that different mineral crystals had different shapes from each other, but that each crystal ...
SRON presentation - University of Groningen
SRON presentation - University of Groningen

... But: “Pure” (geometrical) optical systems would require components much larger than λ. In sub- /mm range diffraction is important, and quasi-optics handles this in a theorectical way. ...
Wide-field extended-resolution fluorescence
Wide-field extended-resolution fluorescence

... The procedure of generating extended-resolution images with SW-SPRF in the vertical direction is shown in Fig. 3. Due to the unique doughnut-shape point-spread function (PSF) of SPRF [7], there exists a central dip in the PSF and the overall full-width-at-half-maximum (FWHM) becomes widened. A non-l ...
The crystal structure of the RuvBL1/RuvBL2 complex
The crystal structure of the RuvBL1/RuvBL2 complex

... D. I., Donner, P., Matias, P. M. & Carrondo, M.A. (2011) J. Struct. Biol., 176:279-291. Conclusions The work leading to the 3D structure determination of the RuvBL1DII/RuvBL2DII complex herein described showed that X-ray crystallography can provide correct, albeit limited structural information ev ...
High-energy x-ray production with pyroelectric crystals
High-energy x-ray production with pyroelectric crystals

... endpoint energy. In x-ray fluorescence, for example, high-energy sources enable the excitation of the K-shell x-ray peaks for high-Z materials as well as the lower-energy L-shell peaks, allowing more positive sample identification. This report shows how a paired-crystal pyroelectric source can be us ...
The Atomic, Molecular and Optical Science
The Atomic, Molecular and Optical Science

... 3. Highlights The AMO instrument has been used in a wide range of scientific investigations ranging from AMO to materials and high-energy-density sciences as well as single-shot coherent imaging applications (Bostedt et al., 2013). The following three examples illustrate three different capabilities ...
sheet-key - Scioly.org
sheet-key - Scioly.org

... All answers are to be written on the answer pages in this packet, in the correct space/blank (there are cues on the answer sheet that go with the station questions). If we can’t easily read or understand what you write, it will be counted as incorrect If you separate the pages – write your team name ...
Experiment 11 THE DIFFRACTION GRATING Light, when passed
Experiment 11 THE DIFFRACTION GRATING Light, when passed

... away from the grating. This distance will be "L" and you can change it as it becomes convenient to do so in the experiment. 5. Aim the small opening on the scale toward the light source so that some light passes through it. Observe the first order spectrum on either side of the opening. 6. Record th ...
A simple method for Bragg diffraction in volume holographic gratings Heifetz,
A simple method for Bragg diffraction in volume holographic gratings Heifetz,

... efficiency by summing reflections from all the grating planes. We assume a single reflection event from each grating plane. The reflections are illustrated in Fig. 4. For the incident unit amplitude electric field, the amplitude of the reflection from each diffraction plane is either ⫾r. The diffrac ...
PROJECT TEM
PROJECT TEM

... device, such as a fluorescent screen, on a layer of photographic film, or to be detected by a sensor such as a CCD camera. The probable interaction between an electron and a specimen is given as below ...
Surface Texture Effect on Luster of Anodized Aluminum
Surface Texture Effect on Luster of Anodized Aluminum

... In this application, we have showcased that the Nanovea ST400 3D Non-Contact Profilometer is an ideal tool for analyzing and comparing the surface finish of anodized aluminum samples. The size of the plateaus on the sample surface plays an important role in the reflectivity of the anodized aluminum. ...
Pulsed Quasi-monochromatic x-ray source for radiography
Pulsed Quasi-monochromatic x-ray source for radiography

... 50 x10 mm2 with a thickness of 2 mm) with cleavage plane parallel to (001) plane and 2d=25.75 Å, was used to select quasi-monochromatic x-ray beam in the spectral range 7.9 – 9.4 Å (1.32 - 1.57 keV) of the gold plasma for the x-ray probing. After reflection from the crystal plane, the probe beam is ...
X-ray photon pairs with highly suppressed background
X-ray photon pairs with highly suppressed background

...  From Eq. (1) it is seen that at a reciprocal lattice vector G. scattering angle near 90° the second term is much larger than the other terms on the right-hand side of the equation. In this case the current density is approximated to JsNL = ...
“Pixel” team
“Pixel” team

... multiple light sources/detectors into a single objective operating in back scattering mode. Exchangeable coupling optics modules are inserted between an objective with infinity correction and an on-axis illumination /video-visualisation system. Key features remain: overall compactness, operation und ...
Lecture 34 - UConn Physics
Lecture 34 - UConn Physics

... an original from the image source at point I. Thus we can think of an arrangement S and I as a double-slit source separated by the distance between points S and I. An interference pattern for this experimental setting is really observed ….. ...
Optical Micrometer
Optical Micrometer

... which is called the critical angle. If the angle of incidence is larger than the critical angle, there cannot be a refracted ray and the beam is totally internally reflected. A light ray traversing a plate of material with parallel entrance and exit faces is displaced laterally without a change in d ...
A. Menegolli
A. Menegolli

... it is present a strong asymmetry going from -45° to +45°, maybe due to the shadow from the support of the sample; the two contributions could not properly have been disentangled, so that it was possible just to have an estimate of the opening angle of the diffusive reflection (~ 30° - FWHM) IPRD06 - ...
How Surface Topography Relates to Materials` Properties
How Surface Topography Relates to Materials` Properties

... (that is, the rms height of the surface around scope of this paper to discuss, but good reviews resulting amorphous surface is rather flat some mean value), but this does not take any may be found elsewhere (15–18). (Fig. 2A), but subsequent annealing to form account of the distance between the feat ...
Materials processing with a tightly focused femtosecond laser vortex
Materials processing with a tightly focused femtosecond laser vortex

... to investigate the effects of the optical angular momentum on photoionization processes [1] and also to obtain information on how the ring-shaped intensity distribution of vortex pulses affects the light-matter interaction. Unfortunately, such studies pose a significant challenge owing to technical ...
Diffracted Light Contrast: Improving the Resolution - Microscopy-UK
Diffracted Light Contrast: Improving the Resolution - Microscopy-UK

... has been artifactually produced and is smaller than the true size. However, for the purposes of the present study, the figure does show that it is possible to image macromolecular assemblies on the order of a nuclear pore complex - structures that previously were thought beyond the capabilities of a ...
Beyond Snel`s law: Refraction of a nano-beam of light.
Beyond Snel`s law: Refraction of a nano-beam of light.

... is quite narrow. However, when the beam width is set as 2/ 5 of the incident wavelength, as shown in Fig. 3, the beam diverges into two branches, one beam traveling along the original incident direction and the other beam traveling in a different direction. Most interestingly, when the beam width is ...
Bessel Beam Theory - u.arizona.edu
Bessel Beam Theory - u.arizona.edu

... Diffraction is a feature of the wave nature of light. It can occur anytime a beam of light passes through an aperture that is large with respect to its wavelength1. According to the Huygens-Fresnel Principle2, every point of the wavefront that is unobstructed by the hindrance serves as a source of s ...
A study of laser-induced self
A study of laser-induced self

... Calculated Amplitude distribution based on mode coupling with H=0.025 ...
MICROWAVE OPTICS – THE MEASUREMENTS OF THE
MICROWAVE OPTICS – THE MEASUREMENTS OF THE

... (what corresponds to the frequencies of 109-1011Hz). These waves are used in radars and other communication systems, as well as in the analyses of very fine details of atomic and molecular structure, and are also generated by electronic devices. As everybody knows interference is one of the phenomen ...
Lecture notes lecture 11 (diffraction)
Lecture notes lecture 11 (diffraction)

... Intensity in Single-Slit Diffraction, Qualitatively To obtain the locations of the minima, the slit was equally divided into N zones, each with width ∆x. Each zone acts as a source of Huygens wavelets. Now these zones can be superimposed at the screen to obtain the intensity as function of θ, the a ...
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Diffraction topography

Diffraction topography (short: ""topography"") is an quantum beam imaging technique based on Bragg diffraction.Diffraction topographic images (""topographies"") record the intensity profile of a beam of X-rays (or, sometimes, neutrons) diffracted by a crystal.A topography thus represents a two-dimensional spatial intensity mapping of reflected X-rays, i.e. the spatial fine structure of a Laue reflection.This intensity mapping reflects the distribution of scattering power inside the crystal; topographs therefore reveal the irregularities in a non-ideal crystal lattice.X-ray diffraction topography is one variant of X-ray imaging, making use of diffraction contrast rather than absorption contrast which is usually used in radiography and computed tomography (CT). Topography is exploited to a lesser extends with neutrons and other quantum beams. In the electron microscope community, such technique is called dark field imaging or diffraction contrast imaging.Topography is used for monitoring crystal quality and visualizing defects in many different crystalline materials.It has proved helpful e.g. when developing new crystal growth methods, for monitoring growth and the crystal quality achieved, and for iteratively optimizing growth conditions.In many cases, topography can be applied without preparing or otherwise damaging the sample; it is therefore one variant of non-destructive testing.
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