相关实验视频
Updated: Jan 8, 2026

14:58
Quantifying X-Ray Fluorescence Data Using MAPS
Published on: February 17, 2018
11.2K
用于建模X射线管谱的SpekPy工具包:扩展到传输目标和额外的目标材料
1Department of Nuclear Medicine and Medical Physics, Karolinska University Hospital, Framstegsgatan 21, 171 64, Stockholm, Sweden; Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Alfred Nobels Allé 8, 141 52, Huddinge, Sweden.
概括
现在SpekPy软件模拟了更多的X射线管类型,包括传输目标和和铜等新元素. 这提高了它对研究人员和行业专业人员在X射线应用中的实用性.
科学领域:
- 医学物理 医学物理
- 材料科学 材料科学 材料科学
- 计算物理 计算物理
背景情况:
- SpekPy是一款用于X射线管谱建模的Python软件工具包.
- 之前的版本只支持Mo,Rh或W目标的反射几何.
- 在全球范围内广泛应用于工业,教育和研究.
研究的目的:
- 扩展SpekPy的功能,包括新的目标元素和传输几何.
- 根据已建立的模拟代码和实验数据验证更新的SpekPy模型.
主要方法:
- 加入了四个新的目标元素: (Cr),铜 (Cu),银 (Ag) 和金 (Au).
- 修改了工具包以模拟传输X射线管目标.
- 根据PENELOPE蒙特卡洛代码和制造商实验频谱的验证预测.
主要成果:
- 在SpekPy v2.5预测和PENELOPE模拟之间有很好的一致性.
- 预测的总流动性在蒙特卡罗结果的10%以内,对于CSDA范围的20%以上的目标.
- 与模拟相比,光谱形状的微不足道差异和与实验数据的令人鼓舞的一致.
结论:
- SpekPy v2.5显著扩大了可以建模的X射线管类型的范围.
- 这些改进提高了SpekPy对更广泛的科学受众的准确性和适用性.
- 扩展的建模功能促进了在各种X射线应用中更广泛的使用.
更多相关视频
相关概念视频
Emission Spectra
75.5K
When solids, liquids, or condensed gases are heated sufficiently, they radiate some of the excess energy as light. Photons produced in this manner have a range of energies, and thereby produce a continuous spectrum in which an unbroken series of wavelengths is present.
75.5K
Atomic Emission Spectroscopy: Instrumentation
1.1K
The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers. Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
1.1K
Atomic Emission Spectroscopy: Lab
538
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...
538
Atomic Emission Spectroscopy: Overview
3.4K
Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
3.4K
Atomic Spectroscopy: Absorption, Emission, and Fluorescence
2.5K
Atomic spectroscopy is a vital tool in elemental analysis, both qualitatively and quantitatively. It can be broadly divided into optical spectroscopy, mass spectroscopy, and X-ray spectroscopy methods. The optical spectroscopic methods are atomic absorption spectroscopy (AAS), atomic emission spectroscopy (AES), and atomic fluorescence spectroscopy (AFS). The first step in all three methods is atomization, where the solid, liquid, or solution-phase samples are converted into gas-phase atoms and...
2.5K
Atomic Absorption Spectroscopy: Radiation and Light Sources
1.1K
Atomic absorption spectroscopy (AAS) relies on the Beer-Lambert law, which requires that the radiation source emits a narrow range of wavelengths to match the absorption characteristics of the analyte atom. The primary criteria for choosing an appropriate radiation source in AAS is to provide a precise and intense emission at specific wavelengths that will allow accurate detection of the analyte.
Two common narrow-range 'line' sources used in AAS are hollow-cathode lamps (HCLs) and...
Two common narrow-range 'line' sources used in AAS are hollow-cathode lamps (HCLs) and...
1.1K

