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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 >Characterization of radioactive particles using non-destructive alpha spectrometry.
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Characterization of radioactive particles using non-destructive alpha spectrometry.

机译：使用非破坏性α光谱法表征放射性粒子。

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摘要

Spherical particles with known properties were used to demonstrate and test a novel software package known as AASIFIT, which is able to unfold complex alpha spectra. A unique feature of the program is that it uses simulated peak shapes in the fitting process. The experimental reference particles in the testing were artificially produced U particles of diameter 1.4microm and a nuclear bomb particle with a twenty-fold greater diameter, mainly composed of U and Pu dioxides. AASIFIT was used to determine the density of the U particles. In addition, the activities of (239+240)Pu and (241)Am were determined for the nuclear bomb particle and compared to earlier determinations in the literature. The results of this investigation demonstrated that the software can be used to estimate the properties of particles emitting alpha radiation. However, the composition and geometry of the investigated particles need to be known with good accuracy for reliable estimates. Furthermore, uncertainties in the stopping power data, especially for U and Pu, may have an influence on the results obtained from the software.
机译：具有已知特性的球形粒子用于演示和测试一种称为AASIFIT的新型软件包，该软件包能够展开复杂的α光谱。该程序的一个独特功能是在拟合过程中使用模拟的峰形。测试中的实验参考粒子是人工产生的直径为1.4微米的U粒子和直径增大了20倍的核弹粒子，主要由U和Pu二氧化物组成。用AASIFIT测定U颗粒的密度。此外，测定了核弹粒子的（239 + 240）Pu和（241）Am活性，并与文献中较早的测定结果进行了比较。这项研究的结果表明，该软件可用于估算发射α射线的​​粒子的性质。然而，为了可靠的估计，需要以很高的精度知道被研究颗粒的组成和几何形状。此外，特别是对于U和Pu，制动力的不确定性可能会影响从软件获得的结果。

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