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 = .01024 GPa & T = 4.2 K
      Note: known as para-hydrogen
      _database_code_amcsd 0015878

      CELL PARAMETERS:    3.7200   3.7200   6.0780   90.000   90.000  120.000
      SPACE GROUP: P6_3/mmc  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     72.841
      Density (g/cm3):      0.092
      MAX. ABS. INTENSITY / VOLUME**2:     0.9406375162E-01
      RIR:      0.333
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                27.69         57.17        3.2216    1   0   0         6
                31.43        100.00        2.8465    1   0   1        12
                48.97         14.56        1.8600    1   1   0         6
                53.42          6.95        1.7150    1   0   3        12
                57.19          1.40        1.6108    2   0   0         6
                59.35          3.23        1.5571    2   0   1        12
                60.98          1.23        1.5195    0   0   4         2
                81.86          1.04        1.1767    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.