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 = .0381 GPa & T = 8.6 K
      Note: known as para-hydrogen
      _database_code_amcsd 0015882

      CELL PARAMETERS:    3.6190   3.6190   5.9050   90.000   90.000  120.000
      SPACE GROUP: P6_3/mmc  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     66.977
      Density (g/cm3):      0.100
      MAX. ABS. INTENSITY / VOLUME**2:     0.9838169053E-01
      RIR:      0.321
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                28.48         57.93        3.1341    1   0   0         6
                32.34        100.00        2.7684    1   0   1        12
                50.43         13.84        1.8095    1   1   0         6
                55.10          6.48        1.6669    1   0   3        12
                58.94          1.31        1.5671    2   0   0         6
                61.19          2.99        1.5146    2   0   1        12
                62.96          1.13        1.4763    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.