Elastic and Inelastic neutrons scattering..!!

[Nucengable]

How I can find the energy lost by the neutron in elastic scattering and inelastic scattering, if we assumed its isotropic scattering in the center of mass?

[mathman]

If its elastic, then conservation of momentum and kinetic energy will give you the result. There is one degree of freedom - the angle after collision.

For inelastic scattering you need the amount of kinetic energy lost to exciting the target. That is a function of the nuclide and the neutron energy - there is information available.
http://www.mcs.anl.gov/events/workshops/nprcsafc/Presentations/Oblozinsky%20afc-1%20plenary.pdf