# Use the results of Problems 13 and 15 to plot E / E as a function of both LAB and COM . Problem 13.

Use the results of Problems 13 and 15 to plot E/E

as a function of both LAB and COM.

Problem 13

Use the diagram showing neutron velocity before and after a collision

to conclude that:

where a = [(A 1)/(A + 1)]2

is known as the collision parameter. Use this relation to:

a) find the angle corresponding to the minimum energy of the

emerging neutron ( E_min )

b) find E_min, the minimum

energy of the emerging neutron