Which of the following statements best describes the fast neutron reactors?
A. A fast neutron reactor is a type of reactor in which nuclear fission chain reaction is sustained by fast neutrons.
B. A fast neutron reactor is a type of reactor in which nuclear fusion chain reaction is sustained by fast neutrons.
C. A fast neutron reactor is a type of reactor in which nuclear fission chain reaction is sustained by neutron moderator.
D. None of the above
Answer:A
Which of the following statements best describes the fast neutron reactors?
A. A fast neutron reactor is a type of reactor in which nuclear fission chain reaction is sustained by fast neutrons. B. A fast neutron reactor is a type of reactor in which nuclear fusion chain reaction is sustained by fast neutrons. C. A fast neutron reactor is a type of reactor in which nuclear fission chain reaction is sustained by neutron moderator. D. None of the above
Explanation: A fast neutron reactor or a fast reactor is a category of the nuclear reactor in which the fission chain reaction is sustained by fast neutrons. In order to sustain a fission chain reaction, the neutrons released in fission events have to react with other atoms in the fuel and the chance of this occurring depends on the energy of the neutron; most atoms will only undergo induced fission with high energy neutrons, although a smaller number prefers much lower energies.