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Nuclear transmutation is the conversion of one nuclide into another. It can occur by the radioactive decay of a nucleus, or the reaction of a nucleus with another particle. The first manmade nucleus was produced in Ernest Rutherford’s laboratory in 1919 by a transmutation reaction, the bombardment of one type of nuclei with other nuclei or with neutrons. Rutherford bombarded nitrogen-14 atoms with high-speed α particles from a natural radioactive isotope of radium and observed...
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Controlled nuclear fission reactions are used to generate electricity. Any nuclear reactor that produces power via the fission of uranium or plutonium by bombardment with neutrons has six components: nuclear fuel consisting of fissionable material, a nuclear moderator, a neutron source, control rods, reactor coolant, and a shield and containment system.
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AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
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Spectroscopic Compton imaging of prompt gamma emission at the MeV energy range.

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Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis
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切碎的冷中子束激活分析分析.

Danyal J Turkoglu1, H Heather Chen-Mayer2

  • 1Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD 20899 USA. He is now with USNC-Tech, Seattle, WA 98199 USA.

IEEE transactions on nuclear science
|November 1, 2024
PubMed
概括
此摘要是机器生成的。

一个新的线性快速中子束切割器可以在没有样本转移的情况下进行短寿命同位素的内束激活分析. 该系统允许对中子捕获产品进行精确的定量分析,提高核测量的准确性.

关键词:
切碎的中子束.线性直升机直升机中子激活分析分析中子激活分析短暂活化产品的活化时间很短.

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科学领域:

  • 核物理 核物理 核物理
  • 分析化学 分析化学
  • 材料科学 材料科学 材料科学

背景情况:

  • 快速马激活分析 (PGAA) 传统上需要样本转移来分析中子捕获产品.
  • 短寿命同位素由于它们的快速衰变而带来挑战,需要快速分析技术.
  • 现有的方法可能缺乏对特定同位素的定量分析的精度.

研究的目的:

  • 设计和实施一个线性快速中子束切割器用于内束激活分析.
  • 为了能够在没有样本转移的情况下分析短寿命的中子捕获产品.
  • 证明系统对量化分析和峰值分离的能力.

主要方法:

  • 在PGAA仪器上部署一个线性快速中子束切割器.
  • 短寿命同位素 (T1/2>~10毫秒) 的内射激活分析.
  • 为特定的同位素 (Se-77,Yb-175m,Dy-165) 优化直升机时间.
  • 使用时间的列表模式数据采集用于峰值分离.

主要成果:

  • 短寿命同位素的内射激活分析取得了成功.
  • 该系统通过对质量增加的线性反应展示了定量分析能力.
  • 优化的直升机定时显示了对特定同位素分析的优势.
  • 使用列表模式数据证明了重叠的能量峰值的分离.

结论:

  • 线性快速中子束切割器有效地使短寿命同位素的内束激活分析成为可能.
  • 该系统适用于定量分析,在同位素特定测量方面具有优势.
  • 时间标记数据采集有助于解决复杂的频谱.