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: fcc at P = 12 GPa
      _database_code_amcsd 0013228

      CELL PARAMETERS:    5.1590   5.1590   5.1590   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    137.308
      Density (g/cm3):      1.891
      MAX. ABS. INTENSITY / VOLUME**2:      36.47426131    
      RIR:      6.280
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                30.00        100.00        2.9785    1   1   1         8
                34.78         47.43        2.5795    2   0   0         6
                50.00         26.27        1.8240    2   2   0        12
                59.42         26.61        1.5555    3   1   1        24
                62.35          7.31        1.4893    2   2   2         8
                73.41          2.87        1.2897    4   0   0         6
                81.29          7.94        1.1836    3   3   1        24
                83.87          7.15        1.1536    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.