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 = 3 GPa
      _database_code_amcsd 0013218

      CELL PARAMETERS:    4.6220   4.6220   4.6220   90.000   90.000   90.000
      SPACE GROUP: Im3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     98.739
      Density (g/cm3):      1.315
      MAX. ABS. INTENSITY / VOLUME**2:      34.88895006    
      RIR:      8.640
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                27.29        100.00        3.2682    1   1   0        12
                38.97         16.43        2.3110    2   0   0         6
                48.23         30.48        1.8869    2   1   1        24
                56.30          8.35        1.6341    2   2   0        12
                63.67         10.19        1.4616    3   1   0        24
                70.59          2.25        1.3343    2   2   2         8
                77.23          9.61        1.2353    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.