Helium-Hydrogen Synergistic Effects in Structural Materials Under Fusion Neutron Irradiation

• DOI: 10.3389/fmats.2022.849115
• Publication Date: 2022-02-23T13:54:15Z
• Authors: Jia Huang; Haocheng Liu; Zhiying Gao; Yue Su; Qingyuan Liu; Wei Ge; Fengping Luo; Songqin Xia; Liuxuan Cao; Jianming Xue; Yugang Wang; Chenxu Wang
• Keywords: Fusion power; Spallation Neutron Source

In fusion reactors, 14 MeV high-energy neutron irradiation of structural materials will produce large amounts helium and hydrogen simultaneously with displacement defects. These He H atoms interact defects, leading to He-H synergistic effects aggravating the damage. Currently, there exist no available high-flux sources. Additionally, energy spectrum generation in fission reactors or spallation sources greatly differ from those reactors. Multi-ion beam is a promising method emulate induced by irradiation. This review summarizes experimental studies on effects, analyzes cavity evolution swelling under multi-ion The roles various factors are also discussed. More systematically controlled experiments suggested develop comprehensive understanding materials.