Approximately how many times greater is the average kinetic energy of a thermal neutron in a reactor


Approximately how sundry times senior is the mean kinetic energy of a thermal neutron in a reactor nucleus that is unimpeded at 1200 K than it is in a reactor nucleus unimpeded at 600 K?

What is the aspect of the velocities of the uranium atoms in a reactor nucleus that is unimpeded at 1200 K to the velocities of the uranium atoms in a reactor nucleus that is unimpeded at 600 K?