Monte Carlo simulation of intragranular Xe bubble re-solution in UZr nuclear fuels

IF 1.4 3区物理与天体物理 Q3 INSTRUMENTS & INSTRUMENTATION

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms Pub Date : 2025-01-16 DOI:10.1016/j.nimb.2025.165623

Wenlue Mao , Jinli Cao , Xinfu He , Yonggang Li , Qirong Zheng , Wen Yang , Qi Luo

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Abstract

The bubble re-solution in UZr alloys plays a key role in the nucleation and growth of fission gas bubble, but its mechanism is still unclear. In this work, the behavior of Xe bubble re-solution due to binary collision affected by bubble radius, matrix composition, and fission fragments in UZr fuels has been carried out by 3D Monte Carlo method. The re-solution coefficient (b₀) decreases with the increase of bubble radius (R_b), and it will increase with the increase of Zr concentration (C_Zr) because of the higher energy entering the bubble. Using typical fission fragments (Sr, and I), it is found that the re-solution coefficient with small atomic numbers is higher than that of low-energy fission fragments with large atomic numbers. Further, we obtain the re-solution coefficient as a function of bubble radius and Zr concentration, and give the effective re-solution coefficients (

b_{0}^{'}

) in the intermediate region and the inner region according to the available experimental data. The value of the intermediate region is close to that of existing model, while the re-solution coefficient in the inner region is 3 orders of magnitude higher. This also shows that the fission gas behaviors in different phases are obviously different, which need more atomic-scale calculations in future.

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来源期刊

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms 物理-核科学技术

CiteScore

2.80

自引率

7.70%

发文量

231

审稿时长

1.9 months

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.