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Question why the neutron energy increases in the transportation 

Forum: Hadronic Processes
Date: Apr 02, 08:10
From: fafu <fafu>

Hi,

I did a very simple model with a thin cylinder geometry to simulate the single interaction of a mono-energetic (14.1 MeV) neutron beam. The cylinder is with a long axis length of 2m and a radius of 0.00000001cm. The material of the cylinder is iron. The direction of the incident neutrons is along the axis of the cylinder. I recorded the energy and direction when the neutron gets out of the cylinder. In the results, I found few records have energy larger than 14.1 MeV, about 14.2 MeV. I tried to figure out which process made the energy increase, so I print out the name of the process. It shows "Transportation". How can the transportation process increase its energy by 0.1Mev? Is there anyone could help me to explain this?

Thanks in advance.

Fafu

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