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 = 87.9 GPa
      Note: structure known as beta-Po type, phase Se V
      _database_code_amcsd 0012743

      CELL PARAMETERS:    3.8920   3.8920   2.9572   90.000   90.000  120.000
      SPACE GROUP: R-3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     38.793
      Density (g/cm3):     10.138
      MAX. ABS. INTENSITY / VOLUME**2:      317.6567368    
      RIR:     10.202
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                40.58        100.00        2.2229    1   0   1         6
                46.68         65.25        1.9460    1   1   0         6
                63.54         24.20        1.4642    0   2   1         6
                69.41         18.17        1.3540    0   1   2         6
                82.43         21.66        1.1700    2   1   1        12
                86.65          9.52        1.1235    3   0   0         6
                87.83          9.21        1.1115    2   0   2         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.