The averaged fractional energy lost per elastic scattering event of neutron moderation process is shown in the following formulation
(/bar (Delta E))/(E)=(1)/(2)(1-alpha )
where /bar (Delta E)=E(-)/(b)ar (E^(')), which is referring to the averaged energy lost after an elastic scattering event; alpha =((A-1)/(A+1))^(2), where A=(M)/(m) refers to the mass ratio of the target nuclide and a neutron.
If the energy before scattering E=5 imes 10^(6)eV, while the desired energy after "moderation" is 1eV, how many collisions does a neutron required to encounter for such process, assuming this neutron always encounter elastic scattering interaction? Calculate the result assuming the target nuclides are ^(1)H and ^(12)C. (atomic mass of ^(1)H is 1.007825 ; atomic mass of ^(12)C is 12.00000 ).
The averaged fractional energy lost per elastic scattering event of neutron moderation process
is shown in the following formulation
AE 1 E
where AE = E -E', which is referring to the averaged energy lost after an elastic scattering
event;a=
, where A = M/m refers to the mass ratio of the target nuclide and a neutron.
If the energy before scattering E = 5 x 10 eV, while the desired energy after "moderation" is 1 ev,how many collisions does a neutron required to encounter for such process,assuming this neutron always encounter elastic scattering interaction? Calculate the result assuming the target nuclides are 1H and 12C. (atomic mass of 1H is 1.007825; atomic mass of 12C is 12.00000).