Neptunium-beta
      Wyckoff R W G
      Crystal Structures 1 (1963) 7-83
      Second edition. Interscience Publishers, New York, New York
      Sample is stable between 551 K and 843 K
      Note: T = 586 K
      _database_code_amcsd 0011264

      CELL PARAMETERS:    4.8970   4.8970   3.3880   90.000   90.000   90.000
      SPACE GROUP: P42_12    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     81.246
      Density (g/cm3):     19.373
      MAX. ABS. INTENSITY / VOLUME**2:      1271.096411    
      RIR:     21.364
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                26.31          1.88        3.3880    0   0   1         2
                32.13         25.81        2.7862    1   0   1         8
                36.70         70.94        2.4485    2   0   0         4
                37.13        100.00        2.4217    1   1   1         8
                45.72          1.56        1.9845    2   0   1         8
                49.56         14.02        1.8392    2   1   1         8
                52.88         22.60        1.7314    2   2   0         4
                54.14          2.61        1.6940    0   0   2         2
                57.57          8.45        1.6009    1   0   2         8
                60.88          6.96        1.5217    1   1   2         8
                63.23          3.05        1.4706    3   0   1         8
                66.37         29.97        1.4084    3   1   1         8
                67.20          4.92        1.3931    2   0   2         8
                70.25          8.44        1.3399    2   1   2         8
                75.40          3.32        1.2607    3   2   1         8
                78.06          5.92        1.2242    4   0   0         4
                79.09          2.84        1.2108    2   2   2         8
                81.97          2.54        1.1754    3   0   2         8
                84.83          4.59        1.1430    3   1   2         8
                86.10          1.60        1.1293    0   0   3         2
                86.91          2.14        1.1208    4   1   1         8
                88.94          1.01        1.1004    1   0   3         8
                89.50          7.93        1.0950    4   2   0         8
                89.76          5.74        1.0926    3   3   1         8
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.