本研究旨在於探討食鹽（氯化鈉）作為光刺激發光劑量計（OSLD）測量輻射之材料分析以及量測條件最佳化。目前OSLD最常使用的材料為Al2O3:C，其具有成本較高的缺點，故開發較具成本效益之替代材料為近年輻射度量研究的重要議題。本研究以日常生活中易取得的食鹽作為實驗樣本，包含碘鹽、分析級鹽、岩鹽、湖鹽以及黑鹽，藉由計讀儀之開發並運用光刺激發光技術進行輻射特性計測，評估食鹽之再現性、均勻性、重複計讀特性、劑量響應、回火、消光等特性，了解食鹽成分中各種不同微量元素含量對於OSL特性的影響。
實驗結果顯示食鹽具良好的光子輻射劑量響應；食鹽晶格中參雜異原子具有提升重複計讀特性的效果，但會導致OSL訊號量降低。食鹽應用於光刺激發光輻射度量之技術，可從回火速率了解食鹽晶體對可見光極為敏感，故使用此種技術需將食鹽晶體密封以隔絕外界光源；消光實驗結果顯示，食鹽晶體應於曝露輻射後放置特定時間始能計讀，藉以避免訊號高估。
最終結果顯示湖鹽具有最佳的重複計讀特性和劑量響應，而分析級鹽和岩鹽因其再現性及均勻性不佳導致其實驗結果不穩定，黑鹽則因雜質量過高導致OSL訊號極低，最不適合用於輻射量測。

This study is aimed to analyze and optimize of applying salt (NaCl) material as optical stimulated luminescent dosimeters (OSLDs). One of the disadvantages of commercialized OSLD material, Al2O3: C, is highly costed, a substitutional choice thus getting popular in the field of radiation dosimeter study.
Herein, easily available salts in our daily life including iodine salt (NaCl(I)), analytical NaCl (NaCl(A)), rock salt (NaCl(R)), lake salt (NaCl(L)) and black salt (NaCl(B)) were studied with their reproductivity, homogeneity, repeatability, dose-response, annealing and fading properties, to dig out the effect of trace impurities on OSL properties.
NaCl(A) show good dose-response correlation, and heterogeneous doping could effectively enhance the reproductivity of NaCl dosimeter with some response drop. For applying salts as OSLD materials, annealing experiment show they are sensitive to visible light, and fading experiment show OSL response would be stabilized for a certain period; thus, sealing in dark at least for a period is needed for a NaCl OSLD after the exposure of radiation.
The result show NaCl(L) has the best repeatability and dose-response correlation; NaCl(A) and NaCl(R) might not be proper materials owing to poor stability of reproductivity and homogeneity. NaCl(B) show the least potential OSL material owing to lowest dose response, which may be caused by high impurity contents.

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