Beryllium
      Ming L C, Manghnani M H
      Journal of Physics F: Metal Physics 14 (1984) 1-8
      Isothermal compression and phase transition in beryllium to 28.3 GPa
      Locality: synthetic
      Sample: at P = 19.5 GPa
      Note: BeII phase, slightly distorded HCP
      _database_code_amcsd 0013187

      CELL PARAMETERS:    4.4004   4.4004   3.4020   90.000   90.000  120.000
      SPACE GROUP: P6_3/mmc  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     57.049
      Density (g/cm3):      0.525
      MAX. ABS. INTENSITY / VOLUME**2:     0.8702881619    
      RIR:      0.540
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                23.34         68.20        3.8109    1   0   0         6
                35.37        100.00        2.5379    1   0   1        12
                41.02         40.32        2.2002    1   1   0         6
                47.73          6.13        1.9054    2   0   0         6
                53.90          5.55        1.7010    0   0   2         2
                55.26         23.10        1.6624    2   0   1        12
                59.51          6.12        1.5533    1   0   2        12
                64.72          4.74        1.4404    2   1   0        12
                69.90         15.06        1.3457    1   1   2        12
                71.07         21.52        1.3264    2   1   1        24
                74.73          6.22        1.2703    3   0   0         6
                74.82          3.10        1.2689    2   0   2        12
                88.98          1.35        1.1001    2   2   0         6
                89.07          4.04        1.0992    2   1   2        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.