Figure 3
From: Suppression of X-ray-induced dissociation of H2O molecules in dense ice under pressure
XRD patterns (background subtracted) at (a) 21 and (b) 43 GPa. The red broken and black solid lines in the XRD patterns indicate before and after irradiation, respectively. Diffraction indices of ice VII with cubic symmetry are shown below the patterns. Numbers above black arrows in (a) are diffraction indices of ε-O2 (a = 7.86(2), b = 5.73(2), c = 3.58(1) Å, β = 113.0(3)°). The letter “G” in (b) indicates the diffraction peak of beryllium 101. The incident X-ray energy was 30.0 keV.
