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 = 150 GPa
      Note: structure known as bcc, phase Se VI
      _database_code_amcsd 0012753

      CELL PARAMETERS:    2.7941   2.7941   2.7941   90.000   90.000   90.000
      SPACE GROUP: Im3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     21.814
      Density (g/cm3):     12.020
      MAX. ABS. INTENSITY / VOLUME**2:      612.4877416    
      RIR:     16.592
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                45.93        100.00        1.9757    1   1   0        12
                66.98         14.86        1.3971    2   0   0         6
                85.04         29.09        1.1407    2   1   1        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.