Potassium
      Liu L
      Journal of Physics and Chemistry of Solids 47 (1986) 1067-1072
      Compression and polymorphism of potassium to 400 Kbar
      Locality: synthetic
      Sample: bcc at P = 12 GPa
      _database_code_amcsd 0013227

      CELL PARAMETERS:    4.1300   4.1300   4.1300   90.000   90.000   90.000
      SPACE GROUP: Im3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     70.445
      Density (g/cm3):      1.843
      MAX. ABS. INTENSITY / VOLUME**2:      48.90627678    
      RIR:      8.640
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                30.61        100.00        2.9204    1   1   0        12
                43.84         15.21        2.0650    2   0   0         6
                54.42         26.77        1.6861    2   1   1        24
                63.74          7.11        1.4602    2   2   0        12
                72.35          8.60        1.3060    3   1   0        24
                80.57          1.93        1.1922    2   2   2         8
                88.60          8.57        1.1038    3   2   1        48
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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.