A neutron collides elastically with an initially stationary deuteron. Find the fraction of the kinetic energy lost by the neutron

Question 1

(a) in a head-on collision;

(b) in scattering at right angles.

Question 2

(a) In a head on collision

Where pd and pn are the momenta of deuteron and neutron after the collision. Squaring

This is the energy lost by neutron. So the fraction of energy lost is

(b) In this case neutron is scattered by 90°. Then we have from the diagram

kratos · Answer 1 · 2020-11-27T10:31:38+0000

(a) In a head on collision

Where pd and pn are the momenta of deuteron and neutron after the collision. Squaring

This is the energy lost by neutron. So the fraction of energy lost is

(b) In this case neutron is scattered by 90°. Then we have from the diagram

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