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 = .140 GPa & T = 17.3 K
      Note: known as para-hydrogen
      _database_code_amcsd 0015884

      CELL PARAMETERS:    3.4350   3.4350   5.5940   90.000   90.000  120.000
      SPACE GROUP: P6_3/mmc  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     57.162
      Density (g/cm3):      0.117
      MAX. ABS. INTENSITY / VOLUME**2:     0.1061905194    
      RIR:      0.295
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                30.04         59.42        2.9748    1   0   0         6
                34.14        100.00        2.6265    1   0   1        12
                53.34         12.51        1.7175    1   1   0         6
                58.41          5.68        1.5799    1   0   3        12
                62.44          1.14        1.4874    2   0   0         6
                64.87          2.58        1.4375    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.