Hydrogen
      Ishmaev S N, Sadikov I P, Chernyshev A A, Vindryevsky B A, Sukhoparov V A,
      Telepnev A S, Kobelyev G V
      Zhurnal Eksperimental'noi i Teoreticheskoi Fiziki 84 (1983) 394-403
      Neutron structural investigations of solid para-hydrogen at pressures
      up to 24 kbar
      Locality: synthetic
      Sample: at P = .01294 GPa & T = 4.2 K
      Note: known as para-hydrogen
      _database_code_amcsd 0015879

      CELL PARAMETERS:    3.7130   3.7130   6.0560   90.000   90.000  120.000
      SPACE GROUP: P6_3/mmc  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     72.305
      Density (g/cm3):      0.093
      MAX. ABS. INTENSITY / VOLUME**2:     0.9452359040E-01
      RIR:      0.332
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                27.74         57.31        3.2156    1   0   0         6
                31.50        100.00        2.8400    1   0   1        12
                49.07         14.54        1.8565    1   1   0         6
                53.60          6.87        1.7097    1   0   3        12
                57.30          1.40        1.6078    2   0   0         6
                59.49          3.21        1.5539    2   0   1        12
                61.22          1.21        1.5140    0   0   4         2
                82.15          1.03        1.1733    1   1   4        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.