Chenxu Wang , Yiheng Chen , Yuan Gao , Chuan Xu , Dongpo Fu , Xiangjun Yang , Xinlu Xu , Yizhou Qian , Baoshan Zhang , Liang Xia , Xiaolei Ma , Haocheng Liu , Engang Fu , Jianming Xue , Yugang Wang
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Triple-beam irradiation facility for advanced nuclear materials research at Peking University
In advanced nuclear reactors, transmutation products hydrogen and helium significantly accelerate the degradation of material properties. To simulate the service environment of structural materials in such reactors, a triple-beam irradiation facility has been established at Peking University for materials research under controlled irradiation conditions. The system is based on a 1.7 MV tandem accelerator, supplemented by two ion implanters. To improve the irradiation environment, a plasma cleaner and a liquid nitrogen cold trap have been integrated into the irradiation chamber and effectively inhibiting carbide generation even during high-temperature irradiation. Following the facility’s commissioning, both single- and triple-beam irradiation experiments were performed. The results demonstrate that synergistic hydrogen–helium irradiation significantly promotes cavity nucleation. This work provides a reliable platform for simulating complex irradiation environments and offers valuable insights into the design and evaluation of radiation-resistant materials for next-generation nuclear systems.
期刊介绍:
Section B of Nuclear Instruments and Methods in Physics Research covers all aspects of the interaction of energetic beams with atoms, molecules and aggregate forms of matter. This includes ion beam analysis and ion beam modification of materials as well as basic data of importance for these studies. Topics of general interest include: atomic collisions in solids, particle channelling, all aspects of collision cascades, the modification of materials by energetic beams, ion implantation, irradiation - induced changes in materials, the physics and chemistry of beam interactions and the analysis of materials by all forms of energetic radiation. Modification by ion, laser and electron beams for the study of electronic materials, metals, ceramics, insulators, polymers and other important and new materials systems are included. Related studies, such as the application of ion beam analysis to biological, archaeological and geological samples as well as applications to solve problems in planetary science are also welcome. Energetic beams of interest include atomic and molecular ions, neutrons, positrons and muons, plasmas directed at surfaces, electron and photon beams, including laser treated surfaces and studies of solids by photon radiation from rotating anodes, synchrotrons, etc. In addition, the interaction between various forms of radiation and radiation-induced deposition processes are relevant.