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dc.contributor.author刘广山zh_CN
dc.contributor.author陈敏zh_CN
dc.contributor.author黄奕普zh_CN
dc.contributor.author夏小明zh_CN
dc.contributor.author李炎zh_CN
dc.date.accessioned2011-04-26T08:01:39Z
dc.date.available2011-04-26T08:01:39Z
dc.date.issued2001-05zh_CN
dc.identifier.citation厦门大学学报(自然科学版), Journal of Xiamen University(Natural Science),2001 40(3):669-674zh_CN
dc.identifier.issn0438-0479zh_CN
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/1400
dc.description.abstract用 HPGeγ谱仪测定了海洋沉积物岩心的天然放射性核素 4 0 K、2 10 Pb、2 2 6Ra、2 2 8Ra、2 2 8Th、2 38U和人工放射性核素 13 7Cs.进行了不同体积样品的效率刻度 .对所用直径 75mm、高度 5~ 4 5mm柱形样品几何条件 ,14种能量的 γ射线 ,用 2次多项式拟合效率随样品高度变化的相关系数 R2 好于0 .98.用内插的不同样品高度的效率值 ,进行了 4 6.5~ 1460 .5ke V能区 5~ 4 5mm高度样品的效率刻度 .测量了一些沉积物岩心并就其中的一个柱样中 4 0 K、2 10 Pb、2 2 6Ra、2 2 8Ra、2 2 8Th、2 38U和 13 7Cs的深度分布及其所揭示的海洋学意义进行了分析、讨论 【英文摘要】 Natural radionuclides 40 K, 210 Pb, 226 Ra, 228 Ra, 228 Th, 238 U and article 137 Cs in sediments core were determined with HPGe γ spectroscopy. The efficiency of diameter 75mm and high 5~45 mm was measured for 14 energy γ rays. The efficiency versus thickness of sample are fitted using quadratic equation and the correlation coefficients R 2 are better 0.98. The efficiency calibration was done for sample geometry of 5~45 mm high by efficiency values that ...zh_CN
dc.description.sponsorship国家自然科学基金资助项目 !( 4 99760 2 3)zh_CN
dc.language.isozhzh_CN
dc.publisher厦门大学zh_CN
dc.subject沉积物岩心zh_CN
dc.subject天然放射性核素zh_CN
dc.subject137Cszh_CN
dc.subject效率刻度;zh_CN
dc.subjectsediment corezh_CN
dc.subjectnatural radionuclidezh_CN
dc.subjectefficiency calibrationzh_CN
dc.title海洋沉积物岩心放射性核素的γ谱测定zh_CN
dc.title.alternativeMeasurement of Radionuclides in Sediments Core by HPGe γ Spectroscopyzh_CN
dc.typeArticlezh_CN


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