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23 Nov 2019
In a nuclear reactor, neutrons released by nuclear fission must beslowed down before they can trigger additional reactions in othernuclei. To see what sort of material is most effective in slowing(or moderating) neutrons, calculate the ratio of a neutronâs finalkinetic energy to its initial kinetic energy, KEf/KEi, for ahead-on, elastic collision with each of the following stationarytarget particles: (Notes: the mass of a neutron is 1.009u, wherethe atomic mass unit, u, is defined as 1.00u =1.66x10^-27kg.)
a.An electron (m=5.49x10^-4 u)
b.A proton (M=1.007 u)
c. The nucleus of a lead atom (m=207.2u)
d. What would the best material to build with be?
In a nuclear reactor, neutrons released by nuclear fission must beslowed down before they can trigger additional reactions in othernuclei. To see what sort of material is most effective in slowing(or moderating) neutrons, calculate the ratio of a neutronâs finalkinetic energy to its initial kinetic energy, KEf/KEi, for ahead-on, elastic collision with each of the following stationarytarget particles: (Notes: the mass of a neutron is 1.009u, wherethe atomic mass unit, u, is defined as 1.00u =1.66x10^-27kg.)
a.An electron (m=5.49x10^-4 u)
b.A proton (M=1.007 u)
c. The nucleus of a lead atom (m=207.2u)
d. What would the best material to build with be?
30 Jun 2023
