Sodium
      Barrett C S
      Acta Crystallographica 9 (1956) 671-677
      X-ray study of the alkali metals at low temperatures
      Locality: synthetic
      Sample: at T = 78 K
      Note: lattice parameters are average of 4 values
      _database_code_amcsd 0009184

      CELL PARAMETERS:    4.2350   4.2350   4.2350   90.000   90.000   90.000
      SPACE GROUP: Im3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     75.956
      Density (g/cm3):      1.005
      MAX. ABS. INTENSITY / VOLUME**2:      16.17483756    
      RIR:      5.240
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                29.84        100.00        2.9946    1   1   0        12
                42.70         16.62        2.1175    2   0   0         6
                52.96         30.42        1.7289    2   1   1        24
                61.98          8.06        1.4973    2   2   0        12
                70.29          9.45        1.3392    3   1   0        24
                78.19          2.01        1.2225    2   2   2         8
                85.86          8.28        1.1319    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.