氚自持物理可行性分析 Tritium Self-Sufficiency: A Physics Feasibility Analysis — Preprint

本预印本独立论证液态锂铅增殖包层实现氚自持的物理可行性。基于已确立的核物理数据与ITER实验基准,分析表明:通过Li-6热中子俘获(940靶恩)、铍(n,2n)中子倍增与石墨/铍中子反射的协同作用,氚增殖比TBR突破1.0在物理上完全成立。保守一阶估算在典型球形几何配置下可达TBR=1.05±0.03。工程挑战(MHD压降、液态金属腐蚀、中子辐照损伤)均已梳理已知解决路径。本预印本用于确立学术优先权。完整技术报告(含详细参数敏感性分析与OpenMC蒙特卡洛模拟框架)可联系作者获取。 This preprint presents an independent physics feasibility analysis of tritium self-sufficiency in liquid lithium-lead breeding blankets for fusion reactors. Based on established nuclear data and ITER experimental benchmarks, the analysis demonstrates that a tritium breeding ratio (TBR) exceeding 1.0 is physically achievable through the synergy of Li-6 thermal neutron capture (940 barn cross-section), beryllium (n,2n) neutron multiplication, and graphite/beryllium neutron reflection. Conservative first-order estimates indicate TBR = 1.05 ± 0.03 under typical spherical geometry configurations with enriched Li-6. Engineering challenges—MHD pressure drop, liquid metal corrosion, and neutron irradiation damage—are reviewed with known mitigation pathways. This preprint establishes academic priority. The full technical report, including detailed parameter sensitivity analysis and OpenMC Monte Carlo simulation framework, is available upon request to the author.