I NEED HELP WITH QUESTION 4 What is the eV equivalent of room temperature? Assum

Question

I NEED HELP WITH QUESTION 4

What is the eV equivalent of room temperature? Assume that a gas of neutrons settles in equilibrium with a medium at room temperature, what would then be the neutron's speed in m/s? How many classic scatters, on the average, are required to slow a 1-MeV neutron to below 1 eV in Na-23 and in Ni-60? A 2-McV neutron scatters elastically on H-2 (deuterium). Write a small program that computes the scattered ankle in the COM frame theta^c as a function of the scattered angle in the lab frame theta. Plot

Explanation / Answer

question no 4:

for Na-23: e = 1 - [(A-1)2/2A]ln[(A+1)/(A-1)]

                   = 1 - [(23-1)2/2*23]ln[(23+1)/(23-1)]

                    = 0.084489

Number of elastic scatters = ln[E1/E2] / e = ln[106/1] / 0.084489 = 163.5

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for Ni-60: e = 1 - [(A-1)2/2A]ln[(A+1)/(A-1)]

                   = 1 - [(60-1)2/2*60]ln[(60+1)/(60-1)]

                    = 0.032966

Number of elastic scatters = ln[E1/E2] / e = ln[106/1] / 0.032966 = 419

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