Hydrogen Mao H K, Jephcoat A P, Hemley R J, Finger L W, Zha C S, Hazen R M, Cox D E Science 239 (1988) 1131-1133 Synchrotron X-ray diffraction measurements of single-crystal hydrogen to 26.5 Gigapascals Locality: synthetic Sample: at P = 26.5 GPa, T = 300 K _database_code_amcsd 0015436 CELL PARAMETERS: 2.2590 2.2590 3.6090 90.000 90.000 120.000 SPACE GROUP: P6_3/mmc X-RAY WAVELENGTH: 1.541838 Cell Volume: 15.950 Density (g/cm3): 0.210 MAX. ABS. INTENSITY / VOLUME**2: 0.6459668516E-01 RIR: 0.100 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 46.41 37.69 1.9564 1 0 0 6 50.58 30.42 1.8045 0 0 2 2 53.26 100.00 1.7199 1 0 1 12 71.07 5.05 1.3264 1 0 2 12 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.