Small-angle X-ray scattering (SAXS) often includes an unwanted background, which increases the required measurement time to resolve the sample structure. This is undesirable in all experiments, and may make measurement of dynamic or radiation-sensitive samples impossible. Here, we demonstrate a new technique, applicable when the scattering signal is background-dominated, which reduces the requi...

Scattering of waves causes the coherent wave field to be attenuated and dispersed. These phenomena express the fact that the pulse loses coherence by which incoherent coda energy is created. First-order scattering theory violates the law of energy conservation and therefore cannot be used when the wave field is strongly distorted. An approximation is proposed which estimates the interaction bet...

Recent success of coherent elastic [1] and incoherent inelastic [2] Moessbauer scattering of synchrotron radiation (SR) in investigations of very delicate properties of the condensed matter makes also urgent performing of experiments on coherent inelastic Moessbauer scattering (CIMS) of synchrotron radiation (Common meaning of the term CIMS is coherent inelastic Moessbauer scattering accompanie...

Modeling of coherent polarized light propagation in turbid scattering medium by the Monte Carlo method provides an ultimate understanding of coherent effects of multiple scattering, such as enhancement of coherent backscattering and peculiarities of laser speckle formation in dynamic light scattering (DLS) and optical coherence tomography (OCT) diagnostic modalities. In this report, we consider...

Line-field reflection confocal microscopy (LF-RCM) has the potential to add a dimension of parallelization to traditional confocal microscopy while reducing the need for two-axis beam scanning. LF-RCM systems often employ light sources with a high degree of spatial coherence. This high degree of spatial coherence potentially leads to unwanted coherent artifact in the setting of nontrivial sampl...

A crucial issue in coherent x-ray diffraction imaging experiments is how to increase the signal-to-noise ratio when measuring relatively weak diffraction intensities from a nonperiodic object. A novel crystal guard aperture is described that makes use of a pair of multiple-bounce crystal optics to eliminate unwanted parasitic scattering background. This background is often produced by upstream ...

Coherent ω photoproduction from nuclei and ω properties in nuclear matter. Abstract. The coherent ω-meson photoproduction from nuclei is proposed as a phenomenological method to evaluate the momentum dependence of ω-meson mass shift and width in nuclear matter. We analyze available data on un-separated coherent and incoherent ω-meson photoproduction from nuclei and extract the imaginary part of...