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| 1 | A CaS:Ce,Sm-based dosimeter for online dosimetry measurement显示文摘A film dosimeter based on optically stimulated luminescence (OSL) material of CaS:Ce,Sm was developed for online irradiation dosimetry measurement.The stimulation is provided by a laser with a wavelength of 980 nm,and the OSL luminescenceis collected by a photodiode.Using 60Co γ-rays,we investigated the dosimetry characteristic of the dosimeter at different dose rates and total doses.The real-time detection results showed that the OSL signals versus total ionizing dose exhibited a good linearity in a dose range of 0.1-185 Gy. | SUN Yurun CHEN Zhaoyang FAN Yanwei YAN Shiyou HE Chengfa | 2011 | Nuclear Science and Techniques2011，22，2： | 3 |
| 2 | Optically stimulated luminescence of Dy^3+-doped NaCaPO4 glass-ceramics显示文摘Dy^3+-doped glass-ceramics containing NaCaPO4 crystals were successfully fabricated by heat treatment at base glass,and the luminescence properties were investigated for potential applications in radiation measurements.The photo luminescence(PL)excitation and emission spectra exhibit transitions related to Dy^3+ions corresponding to the strongest excitation and emission wavelengths at 351 and 575 nm,respectively.The CW-OSL properties as a function of dopant concentration,pre-heating temperature,pre-heating time and signal fading were investigated.The most appropriate Dy^3+ion concentration was found to be 0.25 mol%.The TL glow curves have a broad peak feature peaking at 195±5℃.The fading of the OSL signal would keep stable in five days with the intensity value of about 76.11%.The samples also exhibit good signal reusability and a broad linear dose response range(0.02-1000 Gy). | Jie Xu Zhaoyang Chen Minqiang Gai Yanwei Fan Chengfa He | 2020 | Journal of Rare Earths2020，38，9： | 3 |
| 3 | Research and Testing of GPS Real-Time Precise Point Positioning显示文摘 | GAO Chengfa GAO Wang HE Fan | 2013 | Journal of Southeast University (Natural Science Edition)2013，43，2： | 1 |
| 4 | Synthesis and optical properties of novel Gd^(3+)-doped BaZn_(2)(PO_(4))_(2)glass-ceramics for radiation detection applications显示文摘45 P_(2)O_(5)-15 BaO-25 ZnO-15 B2O_(3)glasses doped with different concentrations(0 mol%,0.1 mol%,0.25 mol%,0.5 mol%,and 0.75 mol%)of Gd^(3+)were prepared by a melt-quenching method and treated to fabricate glass-ceramics containing BaZn_(2)(PO_(4))_(2)crystals by controllable crystallization.The structural,optical,and dosimetric properties were investigated.FTIR spectra indicate that the glasses are composed of[PO_(4)],[BO_(3)],and[BO_(4)]basic structural units.The XRD pattern analysis indicates that the samples contain BaZn_(2)(PO_(4))_(2)crystals.In the photoluminesce nce(PL)spectra,two emission bands are observed at 307 and 313 nm due to the^(6)P_(5/2)→^(8)S_(7/2)and^(6)P_(7/2)→^(8)S_(7/2)transitions of Gd^(3+),respectively.The OSL dosimetric properties of glass-ceramics were studied further under beta radiation of90Sr.The optimal Gd^(3+)doping concentration of 0.5 mol%was determined.The fading of the OSL signal shows that the CW-OSL signal of Gd^(3+)-doped BaZn_(2)(PO_(4))_(2)glass-ceramics decays by about 58.95%within120 h,and the intensity remains stable thereafter.The thermoluminescence(TL)curve has three peaks at 164,240,and 344℃.Minimum detectable dose(MDD)of the 0.5 mol%Gd^(3+)-doped BaZn_(2)(PO_(4))_(2)glass-ceramics was calculated as 0.675 mGy.The samples also exhibit good signal reusability and a broad linear dose-response range(0.3-500 Gy).Results show the excellent dosimetric properties of Gd^(3+)-doped BaZn_(2)(PO_(4))_(2)glass-ceramics and their potential application in radiation dosimetry. | Wanli Li Zhaoyang Chen Jie Xu Pengjun Zhao Yanwei Fan Chengfa He | 2022 | Journal of Rare Earths2022，40，12： | 0 |
| 5 | 100 keV质子辐照InGaAs单结太阳电池性能退化机理研究显示文摘为研究太阳电池光电参数由低能质子辐照产生的辐射损伤机制,对In_(0.53)Ga_(0.47)As单结太阳电池开展100 keV质子辐照及退火试验研究,分析太阳电池电参数和光谱响应在辐照及退火前后的变化规律,结合SRIM仿真计算结果对辐照引起的位移损伤进行讨论。结果表明,当质子辐照累积注量为5×10^(12)p/cm^(2)时,In_(0.53)Ga_(0.47)As单结太阳电池的短路电流、开路电压和最大输出功率分别衰减到其初始值的88.8%、88.3%、72.3%;太阳电池光谱响应在短波区的衰减比长波区更严重。SRIM仿真结果表明,上述结果是由于100 keV的质子能量沉积在In_(0.53)Ga_(0.47)As单结太阳电池发射区和基区顶部而产生位移损伤缺陷导致的。对辐照后的太阳电池样品进行150℃退火处理,太阳电池电学参数因辐射感生缺陷的湮灭而产生了不同程度的恢复。 | 玛丽娅·黑尼 陈馨芸 雷琪琪 艾尔肯·阿不都瓦衣提 李豫东 郭旗 He Chengfa | 2023 | 太阳能学报2023，44，5： | 0 |
| 6 | Influence of channel length and layout on TID for 0.18 μm NMOS transistors显示文摘Different channel lengths and layouts on 0.18μm NMOS transistors are designed for investigating the dependence of short channel effects(SCEs)on the width of shallow trench isolation(STI)devices and designing in radiation hardness.Results show that,prior to irradiation,the devices exhibited near–ideal I–V characteristics,with no significant SCEs.Following irradiation,no noticeable shift of threshold voltage is observed,radiation–induced edge–leakage current,however,exhibits significant sensitivity on TID.Moreover,radiation–enhanced drain induced barrier lowering(DIBL)and channel length modulation(CLM)effects are observed on short–channel NMOS transistors.Comparing to stripe–gate layout,enclosed–gate layout has excellent radiation tolerance. | WU Xue LU Wu WANG Xin GUO Qi HE Chengfa LI Yudong XI Shanbin SUN Jing WEN Lin | 2013 | Nuclear Science and Techniques2013，24，6： | 0 |
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