def theU238_alpha
      array = Array.new(23)

      array[0] = 1.2311E+0
      array[1] = 1.1486E+0
      array[2] = 7.0701E-01
      array[3] = 2.5209E-01
      array[4] = 7.187E-02
      array[5] = 2.8291E-02
      array[6] = 6.8382E-03
      array[7] = 1.2322E-03
      array[8] = 6.8409E-04
      array[9] = 1.6975E-04
      array[10] = 2.4182E-05
      array[11] = 6.6356E-06
      array[12] = 1.0075E-06
      array[13] = 4.9894E-07
      array[14] = 1.6352E-07
      array[15] = 2.3355E-08
      array[16] = 2.8094E-09
      array[17] = 3.6236E-11
      array[18] = 6.4577E-11
      array[19] = 4.4963E-14
      array[20] = 3.6654E-16
      array[21] = 5.6293E-17
      array[22] = 7.1602E-17

      array
    end
def theU238_alpha
      array = Array.new(23)

      array[0] = 1.2311E+0
      array[1] = 1.1486E+0
      array[2] = 7.0701E-01
      array[3] = 2.5209E-01
      array[4] = 7.187E-02
      array[5] = 2.8291E-02
      array[6] = 6.8382E-03
      array[7] = 1.2322E-03
      array[8] = 6.8409E-04
      array[9] = 1.6975E-04
      array[10] = 2.4182E-05
      array[11] = 6.6356E-06
      array[12] = 1.0075E-06
      array[13] = 4.9894E-07
      array[14] = 1.6352E-07
      array[15] = 2.3355E-08
      array[16] = 2.8094E-09
      array[17] = 3.6236E-11
      array[18] = 6.4577E-11
      array[19] = 4.4963E-14
      array[20] = 3.6654E-16
      array[21] = 5.6293E-17
      array[22] = 7.1602E-17

      array
    end
theU238_alpha is alpha in ANS-5.1-1979 Table 9.