Rubidium
      Wyckoff R W G
      Crystal Structures 1 (1963) 7-83
      Second edition. Interscience Publishers, New York, New York
      Sample at T = 5 K
      Body centered cubic, bcc, structure
      _database_code_amcsd 0011227

      CELL PARAMETERS:    5.5850   5.5850   5.5850   90.000   90.000   90.000
      SPACE GROUP: Im3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    174.209
      Density (g/cm3):      1.629
      MAX. ABS. INTENSITY / VOLUME**2:      79.99118654    
      RIR:     15.988
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                22.51        100.00        3.9492    1   1   0        12
                32.05         19.40        2.7925    2   0   0         6
                39.52         41.27        2.2801    2   1   1        24
                45.96         12.60        1.9746    2   2   0        12
                51.76         16.71        1.7661    3   1   0        24
                57.13          3.91        1.6123    2   2   2         8
                62.19         17.21        1.4927    3   2   1        48
                67.03          1.64        1.3963    4   0   0         6
                71.69          5.13        1.3164    4   1   1        24
                71.69          2.56        1.3164    3   3   0        12
                76.24          4.13        1.2488    4   2   0        24
                80.70          3.42        1.1907    3   3   2        24
                85.10          2.90        1.1400    4   2   2        24
                89.47          5.02        1.0953    4   3   1        48
                89.47          2.51        1.0953    5   1   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.