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 = 1.69 GPa & T = 16.4 K
      Note: known as para-hydrogen
      _database_code_amcsd 0015892

      CELL PARAMETERS:    2.9290   2.9290   4.7800   90.000   90.000  120.000
      SPACE GROUP: P6_3/mmc  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     35.514
      Density (g/cm3):      0.188
      MAX. ABS. INTENSITY / VOLUME**2:     0.1241337315    
      RIR:      0.214
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                35.39         64.23        2.5366    1   0   0         6
                40.25        100.00        2.2406    1   0   1        12
                63.53          9.00        1.4645    1   1   0         6
                69.69          3.90        1.3492    1   0   3        12
                77.93          1.68        1.2259    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.