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 = 9.2 GPa
      _database_code_amcsd 0013223

      CELL PARAMETERS:    4.2240   4.2240   4.2240   90.000   90.000   90.000
      SPACE GROUP: Im3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     75.365
      Density (g/cm3):      1.723
      MAX. ABS. INTENSITY / VOLUME**2:      45.78740492    
      RIR:      8.654
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                29.92        100.00        2.9868    1   1   0        12
                42.82         15.46        2.1120    2   0   0         6
                53.11         27.49        1.7244    2   1   1        24
                62.16          7.34        1.4934    2   2   0        12
                70.50          8.88        1.3357    3   1   0        24
                78.43          1.98        1.2194    2   2   2         8
                86.14          8.69        1.1289    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.