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題名 | 硫酸鈣(鏑)熱發光劑量計用於環境輻射之性能測試與評估=Performance Tests of Thermoluminescent Dosimeter CaSO[feb2]:Dy for Environmental Montoring |
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作者 | 許彬杰; 翁寶山; Hsu, Pin-chieh; Weng, Pao-shan; |
期刊 | 核子科學 |
出版日期 | 19970200 |
卷期 | 34:1 1997.02[民86.02] |
頁次 | 頁49-59 |
分類號 | 449.6 |
語文 | chi |
關鍵詞 | 熱發光劑量計; 環境偵測; Thermoluminescent dosimeter; Environmental monitoring; |
中文摘要 | 本文係分析以自製粉末狀鏑活化硫酸鈣熱發光劑量計參加1974年至1993年間由(1)美國ORNL與DOE兩單位所舉辦國際環境輻射劑量測試比較及(2)我國原子能委員會輻射防護處主辦國內環境輻射劑量測試比較的結果,測試項目分為田野組與實驗室照射組兩項。在不同的測試條件下,依ANSI N13-29的規範分析,其結果顯示:鏑活化硫酸鈣熱發光劑量計對環境輻射劑量評估能力,在國際性的田野試驗場劑量測試耐受值L ≦ 0.5者佔90.9 % L ≦ 0.3者佔63.6%;在國內的田野試驗場劑量測試耐受值L ≦ 0.3者佔100%者,L ≦ 0.1者佔,55%;在國際間實驗室照射劑量測試耐受值L ≦ 0.3者佔89.5%,L ≦ 0.1者佔31.5%;而國內的實驗室照射劑量測試耐受值L ≦ 0.1者佔95.7%。對田野試驗場劑量評估耐受值,偏差為主要影響因素,對實驗室照射劑量評估耐受值,標準差為主要影響因素。耐受值的變動與熱發光劑量計的計讀儀計測模式,以及熱發光劑量計在田野試驗場的放置方式,彼此之間無顯著的關係。 |
英文摘要 | This paper presents the performance tests of self-fabricated powdered TLD CaSo4: Dy for environmental monitoring. The international intercomparison studies were sponsored by the U.S. Department of Energy and its Oak Ridge National Laboratory during a period of two decades between 1974 and 1993. In addition al samall scale of domestic intercomparison stucies was sponsored by the Radiation Protection Department of the Atomic Energy Council of Executive Yuan. The items of tests included both the field tests and laboratory tests based on the suggestions given in the American National Standards Institute N13-29, The intercomparison results revealed the fact the TLD CaSO4:Dy in the international intercomparison tests was within a tolerance level(L)less than 0.5 for 90.9% of the dosimeters involved in the study, and was less than 0.3 for 63.3%. For 100% the domestic intercomparison tests, L was less than 0.3 for 100% and was less than 0.1 for 55%. As far as loboratory test was concerned, L was less than 0.3 for 89.5% and less than 0.1 for 31.5% in the international intercomparison studies. In the domestic laboratory intercomparison studies, L was less than 0.1 for 95.7%. In the field tests, L was mainly affected by the bias incurred while in the laboratory tests standard deviation had the great influence. The TLD reading mode and the method of placing TLD in the field showed no effects on the tolerance level obtained. |
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