Expert-level nuclear energy covering fission reactor physics, reactor types, safety systems, nuclear fuel cycle, waste management, and advanced reactor concepts.
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Fission: heavy nucleus splits releasing energy and neutrons. Chain reaction: fission neutrons cause further fissions, sustained in reactor. Criticality: keff = 1 for sustained reaction, less than 1 subcritical, greater than 1 supercritical. Neutron moderation: slow neutrons more likely to cause fission in U-235. Moderators: light water, heavy water, graphite, beryllium.
PWR: pressurized water reactor, most common, primary and secondary loops. BWR: boiling water reactor, steam generated in core, simpler but radioactive turbine. CANDU: heavy water moderated, natural uranium fuel, online refueling. Fast reactors: no moderator, breed plutonium, burn actinides. SMR: small modular reactors, factory built, passive safety, flexible deployment.
Defense in depth: multiple independent safety barriers. Passive safety: natural circulation and gravity, no active components needed. Negative temperature coefficient: reactivity decreases as temperature rises, self-limiting. ECCS: emergency core cooling system, prevents fuel damage after loss of coolant. Containment: reinforced structure preventing radioactive release.
Front end: mining, conversion, enrichment, fuel fabrication. In-reactor: burnup measured in MWd per tonne, fission products accumulate. Back end: spent fuel storage, reprocessing, final disposal. Proliferation: enrichment and reprocessing dual-use concerns, safeguards.
| Pitfall | Fix |
|---|---|
| Confusing activity and dose | Dose depends on radiation type, energy, and shielding |
| Ignoring delayed neutrons | Critical for reactor control dynamics |
| Overlooking xenon poisoning | Xe-135 buildup after shutdown can prevent restart |
| Underestimating waste volume | All stages of fuel cycle generate waste |
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概要と使いどころ
Expert-level abstract algebra knowledge. Use when working with groups, rings, fields, modules, Galois theory, representation theory, or algebraic structures. Also use when the user mentions 'group', 'ring', 'field', 'homomorphism', 'isomorphism', 'normal subgroup', 'quotient group', 'Sylow theorem', 'Galois theory', 'polynomial ring', 'ideal', 'module', 'vector space', or 'representation theory'.
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Expert-level acoustics knowledge. Use when working with sound waves, acoustic propagation, resonance, standing waves, Doppler effect, room acoustics, ultrasound, noise control, musical acoustics, or architectural acoustics. Also use when the user mentions 'sound wave', 'decibel', 'frequency', 'resonance', 'standing wave', 'Doppler effect', 'acoustic impedance', 'reverberation', 'ultrasound', 'noise control', 'harmonics', or 'sound intensity'.
日本語の概要は準備中です。原文の説明を表示しています。
Expert-level aerodynamics covering subsonic and supersonic flow, lift and drag, airfoil theory, boundary layers, compressible flow, and CFD methods.
日本語の概要は準備中です。原文の説明を表示しています。
Expert-level air quality engineering covering pollutant sources, atmospheric dispersion, air quality standards, emission controls, and air quality modeling.
日本語の概要は準備中です。原文の説明を表示しています。
Expert-level aircraft structures covering structural design philosophy, wing and fuselage analysis, fatigue and damage tolerance, composite structures, and certification.
日本語の概要は準備中です。原文の説明を表示しています。
Expert-level algorithms and complexity theory covering sorting, searching, graph algorithms, dynamic programming, greedy algorithms, NP-completeness, and algorithm design paradigms.
日本語の概要は準備中です。原文の説明を表示しています。