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 = 1.2 GPa
      _database_code_amcsd 0013216

      CELL PARAMETERS:    4.9360   4.9360   4.9360   90.000   90.000   90.000
      SPACE GROUP: Im3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    120.261
      Density (g/cm3):      1.080
      MAX. ABS. INTENSITY / VOLUME**2:      28.39517141    
      RIR:      8.564
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                25.52        100.00        3.4903    1   1   0        12
                36.40         17.11        2.4680    2   0   0         6
                44.99         32.73        2.0151    2   1   1        24
                52.43          9.15        1.7451    2   2   0        12
                59.19         11.31        1.5609    3   1   0        24
                65.51          2.51        1.4249    2   2   2         8
                71.52         10.64        1.3192    3   2   1        48
                83.00          1.55        1.1634    3   3   0        12
                83.00          3.10        1.1634    4   1   1        24
                88.61          2.53        1.1037    4   2   0        24
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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.