Study on Radiation Damage Dynamics of Electrical Insulation Materials

电绝缘材料辐射损伤动力学研究

• 批准号: 10680489
• 负责人: IIDA Toshiyuki
• 金额: $ 1.66万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10680489/
• 关键词: Ceramic Insulators; Radiation Damage; Radiation-induced Conductivity; Charge Storage; Displacement Current; Effective Drift Length; Charge Transport; 放射線誘起電気伝導; 電子捕獲・再放出; 再結合; 電離電子

In order to examine the radiation induced conductivity (RIC) of electrical insulators, some sapphire samples (Kyocera) were irradiated at room temperature with DT neutrons and Co-60 gamma-rays. The radiation induced current of the sample was proportional to the neutron and gamma-ray flux. And the RIC coefficient of the sapphire was about 1×10ィイD1-10ィエD1/ Ω / m / Gy / s. There was not a large difference in the RIC coefficient between neutron and gamma-ray irradiatiuons. Moreover, unusual transient currents soon after irradiation, very small drift current and the offset characteristics of the sample were measured during irradiation. To explain these phenomena and to accurately evaluate the change in the electrical characteristics of irradiated ceramic insulators, we need further discussions on the electrical characteristics expected from numerical calculations of the Poissons equation based on a model of carrier transport in ceramics.

为了研究电绝缘体的辐射诱导电导率（RIC），用DT中子和Co-60伽马射线在室温下照射了一些蓝宝石样品（京瓷）。样品的辐射感应电流与中子和伽马射线通量成正比。和蓝宝石的RIC系数是1×10ィイD1-10ィエD1 /Ω/ m / Gy / s。里克没有很大差异系数中子和γ射线irradiatiuons之间。此外，在辐照过程中，测量到辐照后瞬时电流异常、漂移电流非常小以及样品的偏移特性。为了解释这些现象并准确地评估辐照陶瓷绝缘体电特性的变化，我们需要进一步讨论基于陶瓷中载流子输运模型的泊松方程的数值计算所期望的电特性。

项目成果

T. Tanaka & T. Iida: Proc. 13th Workshop on Radiation Detectors. 99・8. 27-36 (1999)

T. Tanaka 和 T. Iida：第 13 次辐射探测器研讨会。 99・8（1999）。

T.Tanaka & T.Iida: "Response of CCD Image Sensor to Low Energy Ion Beam"Proc. 13th Workshop on Radiation Detectors and Their Uses. 99・8. 27-36 (1999)

T.Tanaka 和 T.Iida：“CCD 图像传感器对低能离子束的响应”Proc. 13th Workshop on Radiation Detector and Their Uses 99・8 (1999)。

Y. Tamimura, T. Iida et al.: Nucl. Instrum. & Meth. In Phys. Res. A.. 443・2-3. 325-330 (2000)

Y. Tamimura，T. Iida 等：《核与方法》，A. 443·2-3。

T.Nishitani,T.Iida,et al.: "Japanese contribution to ITER task of irradiation tests on diagnostic components" Fusion Engineering and Design. 42. 443-448 (1998)

T.Nishitani、T.Iida 等人：“日本对 ITER 诊断组件辐照测试任务的贡献”融合工程与设计。

Y.Tanimura,T.Iida et al.: "High-temperature Operation of a radiation detector made of a type II a diamonds single crystal synthesized by a HP/HT method"Nucl. Instrum. & Meth. in Phys. Res. A,. 443・2-3. 325-330 (2000)

Y.Tanimura、T.Iida 等人：“由 HP/HT 方法合成的 II 型金刚石单晶制成的辐射探测器”，《核与方法》。 ，443·2-3。