Description: Electron diffraction patterns for single crystal and polycrystalline materials are displayed on a CRT screen. A Welch model 2639 'Electron Diffraction tube' is used in an experiment in ...

The first pulse — the pump — creates excited states ... From the intensities of the zero- (m = 0) and first-order (m = ±1) diffraction, the amplitude and phase of the harmonics from the ...

What is the Diffraction Limit? The diffraction limit is a fundamental barrier in optical microscopy that sets the minimum size of features that can be resolved using conventional light microscopes. It ...

The waves always 'spread' to some extent into the area beyond the gap. This is diffraction - the spreading out of waves when they go through a gap, or past the edge of a barrier. The extent of the ...

"By fine-tuning X-ray pulse conditions, we will be able to observe ... Non-linear enhancement of ultrafast X-ray diffraction through transient resonances, Nature Communications (2025).

Figure 2: Protein molecules, virus particles, nanocrystals and cells can be delivered in vacuum to a high-intensity X-ray FEL pulse, in droplets of water or other liquids. Figure 3: Diffraction ...

When a laser beam is incident on a narrow opaque object such as a fine wire or a strand of hair, the resulting diffraction pattern is similar to the diffraction pattern of a slit of the same width as ...

This new method describes an experimental concept called ultrafast vortex electron diffraction, which allows for direct visualization of electron movement in molecules on attosecond timescales.

Definition: X-Ray Diffraction (XRD) is a powerful analytical technique used to characterize the atomic and molecular structure of a crystal. By measuring the angles and intensities of diffracted beams ...