In various shocked meteorites, low-pressure silica polymorph α-cristobalite is commonly found in close spatial relation with the densest known SiO 2 polymorph seifertite, which is stable above ∼80 GPa ...

Then, they began testing the model on diffraction patterns that hadn't been solved before. This data came from the Powder Diffraction File, which contains diffraction data for more than 400,000 solved ...

Particle size analysis is crucial to quality control and product development in a number of key industries including aerosols, construction, food and beverage, paint and coatings, and pharmaceuticals.