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 = .0253 GPa & T = 8.3 K
      Note: known as para-hydrogen
      _database_code_amcsd 0015880

      CELL PARAMETERS:    3.6610   3.6610   5.9720   90.000   90.000  120.000
      SPACE GROUP: P6_3/mmc  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     69.319
      Density (g/cm3):      0.097
      MAX. ABS. INTENSITY / VOLUME**2:     0.9666346021E-01
      RIR:      0.326
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                28.15         57.65        3.1705    1   0   0         6
                31.96        100.00        2.8003    1   0   1        12
                49.81         14.15        1.8305    1   1   0         6
                54.42          6.65        1.6859    1   0   3        12
                58.20          1.35        1.5853    2   0   0         6
                60.42          3.09        1.5322    2   0   1        12
                62.18          1.16        1.4930    0   0   4         2
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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.