SLAC topics

X-ray scattering and diffraction RSS feed

X-ray scattering and diffraction are techniques used to study the atomic and molecular structure of materials. X-rays are directed at a sample, and the resulting scattering patterns provide information about the arrangement and movement of atoms in the sample. X-ray diffraction specifically analyzes the interference patterns that result from X-rays interacting with repeating structures in a material, enabling scientists to determine the precise arrangement of atoms and gain insights into the material's properties.

Illustration of LCLS diffraction protein crystals.
Illustration

This image shows the SARS-CoV-2 virus's main protease, Mpro, and two strands of a human protein, called NEMO.

SARS-CoV-2-NEMO
News Release

Studying a material that even more closely resembles the composition of ice giants, researchers found that oxygen boosts the formation of diamond rain.

Diamond rain formation
Feature

En route to record-breaking X-rays, SLAC’s Cryogenic team built a helium-refrigeration plant that lowers the LCLS-II accelerator to superconducting temperatures.

Images of frost and a thermometer superimposed over an aerial view of an accelerator building.
Illustration
A cross section of the LCLS-II accelerator showing where liquid and gaseous helium flow in and out of the system.
Cross section showing pipes and liquid and gas helium
Feature

Spiraling laser light reveals how topological insulators lose their ability to conduct electric current on their surfaces.

Against a black background, thin, glowing red wires at top impinge on the hexagonal surface of a translucent mass. Small white dots travel along the edges of the surface in two directions. Within the mass, two orange cones meet at their tips.
Feature

After almost two decades of synchrotron experiments, Caltech scientists have captured a clear picture of a cell’s nuclear pores, which are the doors and...

The nuclear pore and its components.
Feature

By revealing the chemistry of plant secretions, or exudates, these studies build a basis for better understanding and conserving art and tools made with...

Plant secretion from what is called "grass tree."
News Release

The facility, LCLS-II, will soon sharpen our view of how nature works on ultrasmall, ultrafast scales, impacting everything from quantum devices to clean energy.

LCLS-II cooldown
Animation
Now that the cavities have been cooled, the next step is to pump them with more than a megawatt of...
Cryomodule cavity animation
Feature

Researchers mimicked these extreme impacts in the lab and discovered new details about how they transform minerals in Earth’s crust.

meteor
Feature

X-ray laser experiments show that intense light distorts the structure of a thermoelectric material in a unique way, opening a new avenue for controlling...

Illustration shows two ball-and-stick molecules in pink and red separated by a blurred streak representing how the first structure is slightly deformed into the second.
Illustration
Illustration shows two ball-and-stick molecules in pink and red separated by a blurred streak representing how the first structure is slightly deformed into the second.