透過您的圖書館登入
IP:18.221.187.207
  • 期刊

以蒙地卡羅方法評估熱發光劑量計之特性研究

Estimation of Characteristics of Tlermoluminescence Dosimeters Appling the Monte Carlo Simulation Method

摘要


輻射曝露或劑量的量測方法中,游離腔(ion chamber)、碘化鈉偵檢器(NaI detector)、化學劑量計(chemical dosimeter)、底片劑量計(film dosimeter)與熱發光劑量計(thermoluminescence dosimeter,TLD)為普遍所使用之方式。本研究針對廣泛用於人員劑量偵測與環境劑量度量的數種不同組成成份的TLD,利用蒙地卡羅方法(Monte Carlo method),以光子作為模擬射源,在相同的照射情況下,對材質不同的TLD(其大小為:3mm×3mm×1mm)進行10keV至15MeV等不同能量的光子曝射,觀察在各種不同成份的TLD在能量變化所產生的反應情形,並計算得到在同一位置為空氣與同一位置為TLD時的反應比值,並以137Cs之光子能量(662keV)作為歸一化基準,求其響應比(response ratio),而得到TLD在不同能量下的相對反應,將五種常用之TLD(TLD-100, TLD-600, TLD-700, TLD-200 以及TLD-900)的反應率在不同能量曝射下的分布情形做比較,分析在不同能量範圍的能量依存性及角度依存性。

關鍵字

無資料

並列摘要


Ion chamber, NaI detector chemical dosimeter, film dosimeter and thermoluminescence dosimeter (TLD) are usually selected instruments in the measurements and detections of radiation exposures. In this work, characteristics of TLD applied as personal and environmental dosimetries were discussed. Monte Carlo method were choose to simulate photon beams with different energies, range from 10 keV to 15 MeV, irradiating TLD chips with the size of 3 mm×3 mm×1 mm. Responses of different TLDs were evaluated and normalized to response of 137Cs photon energy of 662 keV. Energy and angular dependent of different TLDs: TLD-100, TLD-600, TLD-700, TLD-200 and TLD-900 were than estimated and discussed in the results.

並列關鍵字

無資料

延伸閱讀