A study on the synergetic effect of electronic excitation/dislocation damage by in-situ measurement method under irradiation

辐照下电子激发/位错损伤协同效应的原位测量方法研究

• 批准号: 21J13575
• 负责人: SEO POOREUN
• 金额: $ 0.96万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2021
• 资助国家: 日本
• 起止时间: 2021-04-28 至 2023-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-21J13575/
• 关键词: Ceramic oxides; Irradiation; Point defect; HVEM; Radiation damage; Nuclear material; Cathodoluminescence

Gd2O3 doped CeO2 (GDC)is a fluorite sturcture which is a radiation-resistant oxides. This oxide can be a substitute of the nuclear fuel, such as (U,Gd)O2.GDC has nature oxygen vacancies (VOs) generated by reduction of CeO2-x or substitution of Gd3+ ion to Ce4+ ion site, resulting in a cooperative impact that aids in the restoration of radiation damage.The GDC is examined by varying Gd dopant concentration, and they were exposed to heavy ions at high ion fluences to determine the impact of VOs and its stuructue evaluation.To assess the extent of disordering caused by these factors, both virgin and irradiated samples were analyzed on long- and medium-range scales, and images of the affected areas were examined using TEM.In-situ cathodoluminescence spectroscopy under high-energy electron irradiation were also analyzed to determine the charge states of VOs in the beam condition.

Gd 2 O3掺杂CeO 2（GDC）是一种具有萤石结构的抗辐射氧化物。这种氧化物可以作为核燃料的替代物，例如（U，Gd）O2。GDC具有通过还原CeO 2-x或将Gd 3+离子置换到Ce 4+离子位置而产生的天然氧空位（VOs），导致有助于辐射损伤的恢复的协同作用。为了评估由这些因素引起的无序化程度，对原始样品和辐照样品进行了长、中尺度的分析，利用透射电子显微镜（TEM）观察了辐照区的形貌，并通过高能电子辐照下的阴极射线荧光光谱分析了辐照条件下VOs的电荷状态。

项目成果

In-situ cathodoluminescence study in Gd doped ceria under high energy electron irradiation in HVEM

HVEM 高能电子辐照下 Gd 掺杂二氧化铈的原位阴极发光研究

• 发表时间: 2021
• 作者: Pooreun Seo;Jean-Marc Costantini;Syo Matsumura;Kazuhiro Yasuda
• 通讯作者: Kazuhiro Yasuda

In-situ Cathodoluminescence in Gadolinia Doped Ceria under High Energy Electron

高能电子下氧化钆掺杂二氧化铈的原位阴极发光

• 发表时间: 2022
• 作者: Seo Pooreun;Costantini Jean-Marc;Matsumura Syo;Yasuda Kazuhiro
• 通讯作者: Yasuda Kazuhiro

Point defects production in gadolinia doped ceria under high energy electron irradiation by in-situ cathodoluminescence spectroscopy

原位阴极发光光谱在高能电子辐照下氧化钆掺杂二氧化铈的点缺陷产生

• 发表时间: 2021
• 作者: Pooreun Seo;Jean-Marc Costantini;Syo Matsumura;Kazuhiro Yasuda
• 通讯作者: Kazuhiro Yasuda

Microstructure evolution in 200-MeV Xe ion irradiated CeO2 doped with Gd2O3

200 MeV Xe 离子辐照掺 Gd2O3 CeO2 的微观结构演化

• DOI: 10.1063/5.0121951
• 发表时间: 2022
• 期刊: Journal of Applied Physics
• 影响因子: 3.2
• 作者: Seo Pooreun;Yasuda Kazuhiro;Matsumura Syo;Ishikawa Norito;Gutierrez Gaelle;Costantini Jean-Marc
• 通讯作者: Costantini Jean-Marc

RADIATION DAMAGE IN ION-IRRADIATED CeO2 AND (Ce, Gd)O2 SINTERS: EFFECT OF THE Gd CONTENT

• DOI: 10.1016/j.jnucmat.2022.153667
• 发表时间: 2022-03
• 期刊: Journal of Nuclear Materials
• 影响因子: 3.1
• 作者: J. Costantini;G. Gutierrez;Gérald Lelong;M. Guillaumet;Pooreun Seo;K. Yasuda