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 = 4 GPa
      _database_code_amcsd 0013219

      CELL PARAMETERS:    4.5110   4.5110   4.5110   90.000   90.000   90.000
      SPACE GROUP: Im3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     91.795
      Density (g/cm3):      1.414
      MAX. ABS. INTENSITY / VOLUME**2:      37.59190323    
      RIR:      8.654
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                27.97        100.00        3.1898    1   1   0        12
                39.97         16.17        2.2555    2   0   0         6
                49.49         29.66        1.8416    2   1   1        24
                57.81          8.06        1.5949    2   2   0        12
                65.43          9.81        1.4265    3   1   0        24
                72.60          2.17        1.3022    2   2   2         8
                79.50          9.30        1.2056    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.