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 T = 4.2 K
      Note: known as para-hydrogen
      _database_code_amcsd 0015874

      CELL PARAMETERS:    3.7820   3.7820   6.1670   90.000   90.000  120.000
      SPACE GROUP: P6_3/mmc  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     76.392
      Density (g/cm3):      0.088
      MAX. ABS. INTENSITY / VOLUME**2:     0.9170792752E-01
      RIR:      0.341
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                27.23         56.89        3.2753    1   0   0         6
                30.91        100.00        2.8927    1   0   1        12
                48.12         15.05        1.8910    1   1   0         6
                52.56          7.16        1.7411    1   0   3        12
                56.17          1.47        1.6377    2   0   0         6
                58.30          3.38        1.5828    2   0   1        12
                60.00          1.28        1.5417    0   0   4         2
                80.36          1.10        1.1949    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.