IGNOU MPHE 26 2026 - Differentiate between neutron elastic scattering and inelastic scatter

Question

Differentiate between neutron elastic scattering and inelastic scattering. Draw elastic scattering cross-section curves for $^1_1\text{H}$ and $^{56}\text{Fe}$ and write their features.

19 Jan 2026

Answer :

Word Count : 330

Neutron scattering is the process in which neutrons interact with nuclei in a material. It is classified into elastic scattering and inelastic scattering based on energy exchange. 1. Neutron Elastic Scattering: * In elastic scattering, the neutron collides with a nucleus without any energy loss except that due to recoil of the nucleus. * The kinetic energy of the system is conserved. * The neutron may change direction, but its speed decreases slightly depending on the mass of the target nucleus. * Important for moderation of neutrons in nuclear

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