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 = 9.9 GPa
      _database_code_amcsd 0013224

      CELL PARAMETERS:    4.1850   4.1850   4.1850   90.000   90.000   90.000
      SPACE GROUP: Im3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     73.297
      Density (g/cm3):      1.771
      MAX. ABS. INTENSITY / VOLUME**2:      47.05294423    
      RIR:      8.650
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                30.20        100.00        2.9592    1   1   0        12
                43.24         15.36        2.0925    2   0   0         6
                53.64         27.19        1.7085    2   1   1        24
                62.80          7.24        1.4796    2   2   0        12
                71.26          8.76        1.3234    3   1   0        24
                79.30          1.96        1.2081    2   2   2         8
                87.14          8.64        1.1185    3   2   1        48
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.