Selenium
      Akahama Y, Kobayashi M, Kawamura H
      Japanese Journal of Applied Physics 31 (1992) 1621-1624
      Structural study on pressure-induced phase transition from beta-Po type to bcc in selenium at 140 GP
      Locality: synthetic
      Sample: at P = 66 GPa
      Note: structure known as beta-Po type, phase Se V
      _database_code_amcsd 0012740

      CELL PARAMETERS:    3.9650   3.9650   3.0910   90.000   90.000  120.000
      SPACE GROUP: R-3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     42.084
      Density (g/cm3):      9.345
      MAX. ABS. INTENSITY / VOLUME**2:      298.9648707    
      RIR:     10.416
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                39.21        100.00        2.2973    1   0   1         6
                45.77         62.62        1.9825    1   1   0         6
                61.81         23.91        1.5009    0   2   1         6
                66.32         19.00        1.4093    0   1   2         6
                80.22         21.09        1.1966    2   1   1        12
                84.31          9.21        1.1487    2   0   2         6
                84.68          9.10        1.1446    3   0   0         6
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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.