reciprocal space वाक्य
उदाहरण वाक्य
मोबाइल
- This is because orientational averaging causes the three-dimensional reciprocal space that is studied in single crystal diffraction to be projected onto a single dimension.
- The potentials of the atomic cores can be decomposed into Fourier components to meet the requirements of a description in terms of reciprocal space parameters.
- The scattering rate gives the probability per unit time to scatter from a state " k " to any other state in the reciprocal space.
- To explicitly calculate the partition function using the segment density one has to switch to reciprocal space, change variables and only then execute the integration.
- The rotation axis should be changed at least once, to avoid developing a " blind spot " in reciprocal space close to the rotation axis.
- The algorithms make use of fast Fourier transforms ( FFT ), often employing gaussian shaped soft-edged masks in reciprocal space to suppress certain frequency ranges.
- Effectively, the objective lens in a typical microscope is replaced with software to convert from the reciprocal space diffraction pattern into a real space image.
- Applying standard diffraction techniques to crystal powders or polycrystals is tantamount to collapsing the 3D reciprocal space, as obtained via single-crystal diffraction, onto a 1D axis.
- In type II the conduction and valence subbands are staggered in both real and reciprocal space, so that electrons and holes are confined in different layers.
- ECHIDNA allows for structure determinations, texture measurements and reciprocal space mapping of single crystals in most different sample environments serving the physics, chemistry, materials, minerals and earth-science communities.
- Because Bragg angles in the diffraction of high energy electrons are very small ( ~ degrees for 300 keV ), Kikuchi bands are quite narrow in reciprocal space.
- The combined effects of the imaging conditions are known as the contrast transfer function ( CTF ), and can be approximated mathematically as a function in reciprocal space.
- Both real space methods ( treating sections of the helix as single particles ) and reciprocal space methods ( using diffraction patterns ) can be used for these samples.
- Where g is the reciprocal space magnitude of the reflection in question and R o is the radius of the Laue circle, usually taken to be equal to ?.
- This condition results in rods of intensity in reciprocal space, oriented perpendicular to the surface and passing through the reciprocal lattice points of the surface, as in Fig . 1.
- In crystals with significant symmetry, even more reflections may have the same intensity ( Bijvoet mates ); in such cases, even less of the reciprocal space may need to be measured.
- This is a function of q, the scattering vector of momentum transfer cross section in reciprocal space ( in units of inverse distance ), and Z is the atomic number of the atom.
- This symmetry allows one to measure the full Fourier transform from only half the reciprocal space, e . g ., by rotating the crystal slightly more than 180?instead of a full 360?revolution.
- "' Angle-resolved photoemission spectroscopy "'( "'ARPES "'), is a direct experimental technique to observe the distribution of the electrons ( more precisely, the density of single-particle electronic excitations ) in the reciprocal space of solids.
- In the case of a miscut at an angle \ alpha, a second set of rods is produced in reciprocal space called superlattice rods, tilted from the regular lattice rods by the same angle, \ alpha.
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