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題 名 | Development of Nondestructive Gamma-Ray System for the Assessment of Uranium Enrichment in Material Test Reactor (MTR) Fuel=建立非破壞性加馬射線系統藉以評估材料試驗反應器燃料元件中鈾之濃化狀況 |
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作 者 | Iqbal,Masood; Ayazuddin,S. K.; Pervez,Showket; | 書刊名 | 核子科學 |
卷 期 | 35:2 1998.04[民87.04] |
頁 次 | 頁125-132 |
分類號 | 449.43 |
關鍵詞 | 非破壞性加馬射線系統; 材料試驗反應器; 燃料; 鈾; 濃化; Enrichment; Nondestructive method; Research reactors; |
語 文 | 英文(English) |
英文摘要 | A nondestructive gamma-ray detection procedure has been developed for the determination of uranium enrichment in a fresh Material Test Reactor (MTR) fuel element. In this procedure a HPGe detector was used for the measurement of gamma-rays emitted from the uranium assay. For the determination of enrichment, ratio of the characteristic gamma rays technique is used. The major photo peaks used in this technique for �vU and �泲顣a were 185.6 keⅤ and 1002 keⅤ respectively. A computer programme was developed for the correction of the gamma-ray attenuation and bildup factor within the fuel element for a particular geometrry. During calibration of the detection system, a mathematical function was developed giving the efficiency of the detector at the desired locations. The basic parameters and coefficients of the function were measured using gamma-ray standard soure. The measurements were performed for different arrangements of the fuel plates. The MTR fuel element enrichment results show an error<1.0% with the value supplied by the vendor. |
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