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Questions and Answers
What is the advantage of using graphite as a medium in reactor cores?
What is the advantage of using graphite as a medium in reactor cores?
- It is a heterogeneous medium
- Neutrons cannot travel far in graphite
- It is expensive and difficult to obtain
- It has a longer mean free path for neutrons (correct)
What is the disadvantage of using graphite reactors for burning plutonium?
What is the disadvantage of using graphite reactors for burning plutonium?
- Graphite can have a low buildup of minor actinides
- Graphite can have a high buildup of minor actinides (correct)
- Graphite reactors have a softer spectrum than LWRs
- Graphite is not effective at slowing down neutrons
Why is predicting the behavior of neutrons in graphite challenging?
Why is predicting the behavior of neutrons in graphite challenging?
- Accurately modeling graphite behavior does not require coupling to thermal fluidics
- Neutrons cannot travel far in graphite
- Graphite has a large mean free path for neutrons (correct)
- Graphite is a heterogeneous medium
Study Notes
- Graphite is a homogeneous and diffusive medium used in reactor cores.
- Neutrons can travel further in graphite due to its longer mean free path.
- Graphite reactors have a slightly harder spectrum than LWRs.
- Graphite reactors are good at burning plutonium but can have a high buildup of minor actinides.
- High Temperature Gas Cooled Reactors use graphite components as moderators.
- Predicting the behavior of neutrons in graphite is challenging due to its large mean free path.
- Accurately modeling graphite behavior requires discretization and coupling to thermal fluidics.
- Graphite is effective at slowing down neutrons and is low cost and widely available.
- A harder spectrum can result in a more negative temperature feedback.
- Graphite remains an important moderator material in many types of nuclear reactors.
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Description
Test your knowledge on the properties and uses of graphite in nuclear reactors with this quiz! From its role as a moderator to its effectiveness in burning plutonium, graphite plays a vital role in various reactor designs. See how much you know about its behavior and challenges in neutron prediction and modeling. Sharpen your understanding of this essential material and its impact on reactor performance.
