The operation of a heavy-water moderated nuclear reactor utilizing the thorium-uranium fuel cycle depends on several core components and the management of its radioactive products.
Explain the physical mechanism by which a deuterium nucleus (12H^{2}_{1}\text{H}12H) in a heavy-water moderator reduces the kinetic energy of a fast-moving neutron.
Hafnium is commonly used in control assemblies due to its high neutron absorption cross-section. Describe the physical interaction that occurs when a thermal neutron encounters a control rod containing hafnium.
Describe the step-by-step sequence of events that occurs when a thermal neutron induces fission in a nucleus of Uranium-233 (92233U^{233}_{92}\text{U}92233U).
A major challenge in nuclear power generation is the management of high-level waste (HLW).
Identify the primary source of HLW in a reactor and discuss the subsequent stages of its treatment and the physical and technical challenges associated with its long-term disposal.
Your answer should include:
128 exam-style questions on AQA A Level Physics Radioactivity (A-level only), covering Rutherford scattering (A-level only), $\alpha$ , $\beta$ and $\gamma$ radiation (A-level only), Radioactive decay (A-level only), Nuclear instability (A-level only), Nuclear radius (A-level only), Mass and energy (A-level only), Induced fission (A-level only), and Safety aspects (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.