Development of Two-dimensional Imaging Sensor System Utilizing Photostimulated Luminescence Phenomnenon for Ionizing Radiation

利用光刺激发光现象电离辐射二维成像传感器系统的开发

• 批准号: 09558060
• 负责人: NANTO Hidehito
• 金额: $ 6.4万
• 依托单位: Kanazawa Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09558060/
• 关键词: Radiation dosimeter; Photostimulated luminescence; Image sensor; Ceramics; Phosphors; 放射線; 薄膜

In order to develop an intelligent two-dimensional imaging sensor utilizing photostimulated luminescence for ionizing radiation, we investigated the optical characteristics of various photostimulable phosphor materials and the characteristics of the commercially-available imaging plate (IP). The following fruitful results were obtained;(1) Fading mechanismof the IP which has tosolve in practical application to radiation dosimetry was studied. It was found that fading is affected by the humidity, the temperature, the concentration of luminescent centers and type of the electron trapping centers.(2) We found out some new photostimulable phosphor materials such as KCI:Eu, KBr:Eu, KCIィイD2xィエD2BrィイD21-xィエD2:Eu and SrS:Eu, Sm as the material for two-dimensional imaging sensor for radiation dosimetry.(3) It was found that the analysis of the PSL stimulation spevtrum of the IP is useful for a novel radiation dosimeter which can discriminate the energy and the type of the radiation.

为了开发利用电离辐射光激励发光的智能二维成像传感器，我们研究了各种光激励荧光粉材料的光学特性以及市售成像板（IP）的特性，取得了以下丰硕成果；（ 1)研究了辐射剂量测定实际应用中必须解决的IP的衰落机理。发现衰落受湿度、温度、发光中心浓度和电子俘获类型的影响。 (2)我们发现了KCI:Eu、KBr:Eu、KCI:Eu和SrS:Eu、Sm等新型光激发荧光粉材料，可作为辐射剂量测定二维成像传感器的材料。(3)发现IP的PSL刺激谱的分析对于新型辐射剂量计是有用的，该辐射剂量计可以区分能量以及辐射的类型。

项目成果

S.Nasu, H.Nanto et al.: "Fading Characteristics of Photostimulable Phosphor Materials" Radiation Detectors and Their Uses. 97-8. 14-23 (1997)

S.Nasu、H.Nanto 等人：“光刺激磷光体材料的褪色特性”辐射探测器及其用途。

T.Douguchi,H.Nanto et al,: "Photostimulated Luminescence and Its Fading Characteristics in Alkali Halides Phosphors" Radiation Detectors and Their Uses. 98-4. 66-73 (1998)

T.Douguchi、H.Nanto 等人：“碱卤化物磷光体中的光刺激发光及其衰落特征”辐射探测器及其用途。

H.Nanto, S.Nasu et al.: "New Photostimulable Phosphor Materials for Imaging Plate of Computed Radiography" Proceedings of SPIE. 3336(印刷中). (1998)

H.Nanto、S.Nasu 等人：“用于计算机放射成像成像板的新型光刺激磷光体材料”SPIE 3336 论文集（出版中）。

H.Nanto, S.Nasu et al.: "photostimulated Luminescence in KCl_xBr_<1-x>:Eu Phosphor Ceramics as a Two-dimensional Image Sensor Matelial for Radiation" 電気学会論文誌E. 117・3. 142-146 (1997)

H.Nanto、S.Nasu 等人：“KCl_xBr_<1-x> 中的光刺激发光：Eu 磷光体陶瓷作为辐射用二维图像传感器材料” 日本电气工程师学会会刊 E. 117・3 142-146（1997）

H.Nanto: "Physics of Photostimulable Phosphors"Ionizing Radiation. 25. 9-24 (1999)

H.Nanto：“光激发磷光体物理学”电离辐射。