Structure analysis of high-pressure metallic state of iodine

TLDR: In this article, the crystal structure of the high pressure metallic state of iodine has been determined by x-ray diffraction technique ultilizing a diamond-anvil high pressure cell combined with a position-sensitive proportional counter.

Abstract: The crystal structure of the high-pressure metallic state of iodine has been determined by x-ray diffraction technique ultilizing a diamond-anvil high-pressure cell combined with a position-sensitive proportional counter. Diffraction intensities measured at 206 kbar were very well interpreted by assuming the space group ${D}_{2h}^{18}$ which is the same as that at atmospheric pressure. With further increase in applied pressure, the structure will approach to a face-centered orthorhombic lattice formed by monoatomic iodine.