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For coherent radiation, however, the peak is two times higher. Coherent backscattering is very difficult to detect and measure for two reasons. The first is fairly obvious, that it is difficult to measure the direct backscatter without blocking the beam, but there are methods for overcoming this problem.
Coherent backscattering is observed in random media; for visible light most typically in suspensions like milk. Due to weak localization, enhanced multiple scattering is observed in back direction. The Back Scattering Alignment (BSA) coordinate system is often used in radar applications
Opposition surge from the retroreflective lunar soil brightens the area around Buzz Aldrin's shadow during Apollo 11 (photo by Neil Armstrong).. The opposition surge (sometimes known as the opposition effect, opposition spike or Seeliger effect [1]) is the brightening of a rough surface, or an object with many particles, when illuminated from directly behind the observer.
Coherent backscattering, an enhancement of backscattering that occurs when coherent radiation is multiply scattered by a random medium, is usually attributed to weak localization. Not all single scattering is random, however.
The magnitude of the shift can be detected by several methods, the major being coherent and direct-detection detection techniques [37] When aerosols are used as tracers, the strength of the return signal depends upon the aerosol load in the atmosphere and this is known to be dependent upon geographic location, the condition of the atmosphere ...
He is a pioneer in the fields of Biomedical Imaging and Spectroscopy, Ultrafast lasers and optics, tunable lasers, semiconductor materials and devices, optical materials, biophysics, nonlinear optics and photonics; he has also worked extensively in nanotechnology and coherent backscattering.
Compton scattering (or the Compton effect) is the quantum theory of high frequency photons scattering following an interaction with a charged particle, usually an electron.. Specifically, when the photon hits electrons, it releases loosely bound electrons from the outer valence shells of atoms or molecu
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