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 = 140 GPa
      Note: structure known as beta-Po type, phase Se V
      _database_code_amcsd 0012748

      CELL PARAMETERS:    3.8500   3.8500   2.6450   90.000   90.000  120.000
      SPACE GROUP: R-3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     33.953
      Density (g/cm3):     11.583
      MAX. ABS. INTENSITY / VOLUME**2:      331.9632860    
      RIR:      9.331
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                43.68        100.00        2.0722    1   0   1         6
                47.22         78.64        1.9250    1   1   0         6
                66.27         26.36        1.4103    0   2   1         6
                77.67         16.02        1.2293    0   1   2         6
                85.32         24.72        1.1377    2   1   1        12
                87.84         11.51        1.1114    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.