A fertile material in nuclear engineering is defined as____________________?
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Answer: D. the material which absorbs neutrons and undergoes spontaneous changes leading to the formation of fissionable material
Explanation
Fertile materials are non-fissile substances that can absorb free neutrons during reactor operation. Following neutron absorption, these materials undergo radioactive decay leading to fissile isotope creation. This conversion process transforms previously unusable heavy elements into valuable reactor fuel. Common examples of fertile isotopes include uranium-238 and thorium-232 found in nature. Fissile isotopes like plutonium-239 are subsequently produced from these fertile raw materials inside reactors. Neutron capture reactions drive the transmutation of fertile atoms into fissile nuclear fuels.
Breeder reactors utilize fertile materials to manufacture more fuel than they consume during operation. This technology significantly extends global nuclear fuel reserves by utilizing abundant non-fissile elements. Nuclear fuel cycle management relies heavily on understanding fertile material conversion pathways. Option A is wrong because fertile materials are not immediately fissionable by thermal neutrons. Option B is nonsensical in the context of standard nuclear engineering and power terminology. Option C is too vague compared to the precise nuclear definition given in option D.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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