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首页> 外文会议>INMM annual meeting >PLUTONIUM ISOTOPIC ANALYSIS USING FALCON 5000: A PORTABLE HPGe BASED NUCLEAR IDENTIFIER
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PLUTONIUM ISOTOPIC ANALYSIS USING FALCON 5000: A PORTABLE HPGe BASED NUCLEAR IDENTIFIER

机译：使用FALCON 5000进行同位素分析：基于HPGe的便携式核标识符

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摘要

The Falcon 5000 is an advanced Radionuclide Identifier (RID) based on a High Purity Germanium (HPGe) detector. It utilizes Pulse Tube cooling technology to minimize microphonic detector noise and so also achieve the energy resolution needed for isotopic measurement. While there are some high energy γ-lines available for plutonium, the most intense γ- and x-ray peaks are located in the highly overlapping 100 keV region. Therefore having a detector with a high energy resolution is an essential requirement for successful determination of the relative isotopic composition. Analyzing of the most intense region allows shortening the counting time and usually improves the analysis results. The BEGe2830 detector used in this study had an energy resolution good enough to allow the highly overlapping 100-keV region in plutonium spectra to be analyzed by the established isotopic codes MGA and FRAM. A series of measurements on sealed plutonium sources was performed including spectra taken with different absorbers and with the samples placed inside a standard 208 ℓ drum filled with various matrix materials. These measurements were used to investigate several possible scenarios for Falcon use including safeguards measurements as well as the waste analysis in the field.
机译：Falcon 5000是基于高纯锗（HPGe）检测器的高级放射性核素识别器（RID）。它利用脉冲管冷却技术将麦克风检测器的噪声降至最低，从而实现同位素测量所需的能量分辨率。 尽管有一些可用于p的高能γ线，但最强的γ和x射线峰位于高度重叠的100 keV区域。因此，具有高能量分辨率的检测器是成功确定相对同位素组成的基本要求。分析最强烈的区域可以缩短计数时间，通常可以改善分析结果。本研究中使用的BEGe2830检测器具有足够好的能量分辨率，可以通过已建立的同位素代码MGA和FRAM分析analyzed光谱中高度重叠的100-keV区域。 对密封p源进行了一系列测量，包括使用不同的吸收剂以及将样品放置在装有各种基质材料的标准208ℓ鼓内的光谱。这些测量用于调查Falcon使用的几种可能情况，包括保障措施测量以及现场废物分析。

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