Hydrogen
      Vindryevsky B A, Ishmaev S N, Sadikov I P, Chernyshev A A
      Physics Letters 76A (1980) 355-358
      Neutron diffraction studies of solid parahydrogen at pressures up to 5 kbar
      Locality: synthetic
      Sample: P = .5 GPa, T = 57.4 K
      _database_code_amcsd 0015300

      CELL PARAMETERS:    3.2230   3.2230   5.2340   90.000   90.000  120.000
      SPACE GROUP: P6_3/mmc  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     47.085
      Density (g/cm3):      0.071
      MAX. ABS. INTENSITY / VOLUME**2:     0.5892186297E-01
      RIR:      0.270
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                32.07         29.96        2.7912    1   0   0         6
                34.26         29.76        2.6170    0   0   2         2
                36.48        100.00        2.4629    1   0   1        12
                47.63          8.17        1.9091    1   0   2        12
                57.16          5.38        1.6115    1   1   0         6
                62.81          4.36        1.4794    1   0   3        12
                68.36          3.30        1.3722    1   1   2        12
                69.74          2.17        1.3485    2   0   1        12
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       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.