請用此 Handle URI 來引用此文件: http://hdl.handle.net/11455/96482
標題: 同軸式玻璃輻射劑量計判讀儀研發
A Research on Developing The interpretoscope of Coaxial Radiophotoluminescent Glass Dosimeter
作者: 陳景浩
Ching-Hao Chen
關鍵字: 玻璃輻射劑量計
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摘要: 本研究計畫將對照射發光玻璃劑量計系統進行改良,整套系統以同軸方式量測,將提高雷射的聚焦與對焦成像效果,結果均獲得明顯改善,感光耦合元件系統CCD與光電倍增管系統PMT兩者可以進行切換。同時我們也改良樣品座,提高樣品穩定度,使對焦時間與量測時間減少使量測方便性提升及量測時間大幅減少。以兩種方式對小尺寸直徑1.5mm、長度1.8mm,共量測115支1Gy同劑量的照射發光玻璃輻射劑量計(radiophotoluminescent glass dosimeter, RPLGD)做進一步分析及檢測。圓面量測訊號在平均值百分誤差±5%內之樣品數量與舊系統比較,從71%上升到75%。改良後的同軸玻璃輻射測量儀,在線性迴歸分析中套用相同模型都與舊系統的線性趨勢相同。我們改變之前照射發光訊號強度對輻射劑量之關係式,使關係式能更貼近生命週期(Lifetime),將之累計輻射劑量計讀。
The research intends to improve the system of Radio-Photoluminescence Glass Dosimeter (RPLGD). It has significant progress on elevating the ability of laser focusing and the quality of image-forming with coaxial measurement. The results also show that Charge-coupled Device(CCD) and Photomultiplier(PMT) can be switched. Meanwhile, the research enhanced the stability of RPLGD holder that it was obviously shorten the time of focusing and measurement and more convenience to test. For further analysis and detection, the research measured 115 pieces of 1 Gy samples which are 1.5 mm of diameter and 1.8 mm of length in two kinds of experimental modes. To compare with the previous system, the results of the round face measurement with same amount of samples which are within ±5% error in average value were raised from 71% to 75%. To apply the same formula to linear regression analysis, the developed RPLGD has the same linear trending as the previous system. Thus, the research adjusted the relationship between the intensity of the luminescence signal and the radiation dose to make the model much near to the lifetime then examining the doses of cumulative radiation.
URI: http://hdl.handle.net/11455/96482
文章公開時間: 2020-01-26

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