BO-08-22-13

[math]{138 \atop\; }Ba (\gamma,n){136 \atop \; }Cs[/math]

Neutron Separation Energy= Energy needed to liberate a neutron from the Nucleus

=[math]S_n = B({197 \atop 79} Au_{118})-B({{196} \atop 79} Au_{117})[/math]

[math]\left [79(1.007825 u) + 118 (1.008665 u) - 196.97 u\right ] \frac{931.5 MeV}{u} -\left [79(1.007825 u) + 117 (1.008665 u) - 195.967 u\right ] \frac{931.5 MeV}{u}[/math]

[math]=\left [(1.008665 u) - 196.9665516 u+ 195.9665513 u\right ] \frac{931.5 MeV}{u} = 5.3 MeV[/math]

Cs-136

1.2 MeV

PAA_8-22-13