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 = .0079 GPa, T = 15.6 K
      _database_code_amcsd 0015293

      CELL PARAMETERS:    3.7450   3.7450   6.1010   90.000   90.000  120.000
      SPACE GROUP: P6_3/mmc  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     74.103
      Density (g/cm3):      0.045
      MAX. ABS. INTENSITY / VOLUME**2:     0.4786188293E-01
      RIR:      0.345
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                27.50         27.87        3.2433    1   0   0         6
                29.28         29.04        3.0505    0   0   2         2
                31.23        100.00        2.8638    1   0   1        12
                40.60          9.74        2.2221    1   0   2        12
                48.62          7.21        1.8725    1   1   0         6
                53.16          6.33        1.7230    1   0   3        12
                57.77          4.99        1.5958    1   1   2        12
                58.93          3.29        1.5672    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.