Experimental neutron spectra measured by BC501A at TIARA1992/12 [68c100-00]
 Proton Energy : 68 MeV
 Shielding Material :100.0cm 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  1.414E+02  4.815E+00
  6.699E+07  2.831E+02  7.960E+00
  6.499E+07  3.986E+02  6.056E+00
  6.299E+07  4.097E+02  4.991E+00
  6.099E+07  3.137E+02  8.514E+00
  5.899E+07  1.820E+02  7.124E+00
  5.699E+07  8.636E+01  2.849E+00
  5.499E+07  4.693E+01  3.020E+00
  5.299E+07  4.307E+01  3.444E+00
  5.099E+07  4.971E+01  2.929E+00
  4.899E+07  5.391E+01  2.609E+00
  4.699E+07  5.237E+01  2.450E+00
  4.499E+07  4.658E+01  2.242E+00
  4.350E+07  4.145E+01  2.170E+00
  4.250E+07  3.843E+01  2.205E+00
  4.150E+07  3.602E+01  2.321E+00
  4.050E+07  3.424E+01  2.510E+00
  3.950E+07  3.298E+01  2.766E+00
  3.850E+07  3.201E+01  2.947E+00
  3.750E+07  3.104E+01  3.030E+00
  3.650E+07  2.982E+01  3.020E+00
  3.550E+07  2.819E+01  2.944E+00
  3.450E+07  2.616E+01  2.837E+00
  3.350E+07  2.392E+01  2.724E+00
  3.250E+07  2.180E+01  2.608E+00
  3.150E+07  2.019E+01  2.482E+00
  3.050E+07  1.930E+01  2.351E+00
  2.950E+07  1.909E+01  2.257E+00
  2.850E+07  1.926E+01  2.246E+00
  2.750E+07  1.933E+01  2.336E+00
  2.650E+07  1.895E+01  2.494E+00
  2.550E+07  1.798E+01  2.629E+00
  2.449E+07  1.655E+01  2.624E+00
  2.349E+07  1.490E+01  2.392E+00
  2.249E+07  1.321E+01  1.913E+00
  2.149E+07  1.158E+01  1.289E+00
  2.049E+07  9.976E+00  7.099E-01
  1.949E+07  8.437E+00  1.187E+00
  1.849E+07  7.065E+00  1.580E+00
  1.749E+07  6.038E+00  1.588E+00
  1.649E+07  5.496E+00  1.272E+00
  1.549E+07  5.423E+00  8.433E-01
  1.449E+07  5.626E+00  5.475E-01
  1.349E+07  5.872E+00  5.197E-01
  1.249E+07  6.052E+00  7.146E-01
  1.149E+07  6.199E+00  8.919E-01
  1.049E+07  6.401E+00  9.085E-01
  9.487E+06  6.731E+00  7.199E-01
  8.485E+06  7.120E+00  2.334E-01
  7.483E+06  7.186E+00  1.163E+00
  6.481E+06  6.380E+00  2.414E+00