Experimental neutron spectra measured by BC501A at TIARA1992/12 [68c200-00]
 Proton Energy : 68 MeV
 Shielding Material :200.0cm thick Concrete    
 Iron collimator (10.9cm diam.) :  0cm thick
 Distance from Li target to the shield surface(0cm thickness) = 403 cm
 Number of monoenergetic peak neutrons of p-7Li neutron source
    (case-a) =4.00E+09 [sr/micro-Coulomb]
              2.46E+04 [cm^2/micro-Coulomb] at 403 cm
 Measured position :  beam line          
 Reference :Nucl. Sci. Eng. 124(1996)p228     , JAERI-Data/Code97-020(1997)

Graph
 Neutron Energy [eV]
 Neutron Flux [n/cm^2/micro-Coulomb/lethargy]
 Absolute Error [n/cm^2/micro-Coulomb/lethargy]
  6.899E+07  5.347E-01  4.621E-02
  6.699E+07  1.240E+00  7.555E-02
  6.499E+07  2.100E+00  6.124E-02
  6.299E+07  2.617E+00  6.205E-02
  6.099E+07  2.422E+00  1.006E-01
  5.899E+07  1.714E+00  8.274E-02
  5.699E+07  1.036E+00  3.380E-02
  5.499E+07  6.847E-01  4.307E-02
  5.299E+07  5.882E-01  4.369E-02
  5.099E+07  5.836E-01  3.780E-02
  4.899E+07  5.824E-01  3.986E-02
  4.699E+07  5.545E-01  4.276E-02
  4.499E+07  4.990E-01  4.096E-02
  4.350E+07  4.542E-01  3.875E-02
  4.250E+07  4.324E-01  3.839E-02
  4.150E+07  4.210E-01  4.013E-02
  4.050E+07  4.200E-01  4.445E-02
  3.950E+07  4.258E-01  4.992E-02
  3.850E+07  4.324E-01  5.379E-02
  3.750E+07  4.335E-01  5.493E-02
  3.650E+07  4.247E-01  5.308E-02
  3.550E+07  4.044E-01  4.902E-02
  3.450E+07  3.740E-01  4.433E-02
  3.350E+07  3.381E-01  4.046E-02
  3.250E+07  3.024E-01  3.813E-02
  3.150E+07  2.722E-01  3.647E-02
  3.050E+07  2.502E-01  3.396E-02
  2.950E+07  2.355E-01  3.054E-02
  2.850E+07  2.245E-01  2.805E-02
  2.750E+07  2.132E-01  2.807E-02
  2.650E+07  2.004E-01  3.029E-02
  2.550E+07  1.874E-01  3.317E-02
  2.449E+07  1.756E-01  3.449E-02
  2.349E+07  1.651E-01  3.227E-02
  2.249E+07  1.543E-01  2.629E-02
  2.149E+07  1.424E-01  1.820E-02
  2.049E+07  1.303E-01  1.101E-02
  1.949E+07  1.192E-01  1.916E-02
  1.849E+07  1.099E-01  2.653E-02
  1.749E+07  1.023E-01  2.790E-02
  1.649E+07  9.634E-02  2.253E-02
  1.549E+07  9.137E-02  1.341E-02
  1.449E+07  8.724E-02  9.807E-03
  1.349E+07  8.511E-02  5.466E-03
  1.249E+07  8.613E-02  9.634E-03
  1.149E+07  8.881E-02  1.189E-02
  1.049E+07  9.013E-02  1.171E-02
  9.487E+06  9.109E-02  9.624E-03
  8.485E+06  9.619E-02  5.636E-03
  7.483E+06  1.040E-01  7.985E-03
  6.481E+06  1.098E-01  1.223E-02