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首页> 外文期刊>Applied radiation and isotopes: including data, instrumentation and methods for use in agriculture, industry and medicine >Beta Particle Counting of Sediments from Lac du Bouchet and Meerfelder Maar
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Beta Particle Counting of Sediments from Lac du Bouchet and Meerfelder Maar

机译：Lac du Bouchet和Meerfelder Maar沉积物的Beta粒子计数

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A plastic scintillator system for beta particle counting, with automatic sample changer, has been employed to determine the depth dependence of radioactivity at approx. 2 cm intervals along a 6.5 m sediment core from Lac du Bouchet in France. The reliability and reproducibility of measurements from the system are assessed. The data are compared with detailed alpha particle measurements made previously on the same samples as used in the present work and with an earlier smaller set of beta activity measurements from a different core from the same lake. Fifty two out of the 222 samples from the core were also subject to gamma ray spectrometry to aid the discussion. The relative merits of alpha particle counting, beta particle counting and gamma ray spectrometry to assess the depth dependence of radioactivity in a sediment core are considered. The interpretation of the activity distribution down the Lac du Bouchet core and in some sediment samples from Meerfelder Maar in Germany is discussed, particularly in relation to possible climatic influence. Copyright # 1997 Elsevier Science Ltd
机译：使用带有自动样品更换器的用于β粒子计数的塑料闪烁体系统来确定放射性的深度依赖性。沿法国Lac du Bouchet的6.5 m沉积岩心间隔2 cm。评估了系统测量的可靠性和可重复性。将该数据与先前在与本工作中使用的相同样品上进行的详细α粒子测量以及来自同一湖泊不同岩心的更早的一组较小的β活性测量值进行比较。取自岩心的222个样品中，有52个样品也接受了伽马射线能谱分析，以帮助讨论。考虑了用α粒子计数，β粒子计数和伽马射线能谱法评估沉积岩心中放射性深度依赖性的相对优点。讨论了对Lac du Bouchet核心和德国Meerfelder Maar的一些沉积物样品中的活动分布的解释，特别是与可能的气候影响有关的解释。版权所有©1997 Elsevier Science Ltd

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