If a 20-MeV Neutron Released in a Fission Reaction Loses Half Its

question 26

Multiple Choice

If a 2.0-MeV neutron released in a fission reaction loses half its energy in each moderator collision, how many collisions are needed to bring it to (1/25) eV?

• A)6
• B)18
• C)26
• D)30
• E)4

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