使用UV-VIS光谱仪对CR-39探测器的α暴露的估计
H Alameri1, Y Abou-Ali1, M H Obeid2
1Department of Physics, Faculty of Science, University of Damascus, P.O. Box 30621, Damascus, Syria.
概括
通过UV-VIS光谱光度测量,可以通过测量光学特性有效地估计CR-39探测器对α粒子的暴露. 更高的探测器蚀刻时间提高了这种非侵入性α粒子检测方法的准确性.
科学领域:
- 核物理和剂量计核物理和剂量计
- 材料科学和光谱学 材料科学和光谱学
背景情况:
- CR-39塑料探测器广泛用于α粒子检测.
- 估计阿尔法颗粒暴露的传统方法涉及微观轨道计数,这可能是耗时的.
- 材料的光学特性可能对辐射引起的损伤敏感.
研究的目的:
- 调查使用UV-VIS光谱光度计作为估计CR-39探测器对α粒子暴露的非侵入性方法的可行性.
- 为了将UV-VIS光谱数据与α粒子轨迹密度相关联.
- 评估探测器蚀刻时间对光谱光度法有效性的影响.
主要方法:
- CR-39探测器暴露于来自Americium-241 (Am-241) 和气源的α粒子.
- 使用传统光学显微镜量化了α粒子轨迹密度.
- 暴露的CR-39探测器的传输光谱使用UV-VIS光谱 (400-1000纳米范围) 进行测量.
主要成果:
- 在CR-39探测器上的UV-VIS光谱仪读数 (透射率) 和α粒子轨迹密度之间建立了相关性.
- 光谱光度法在估计阿尔法粒子暴露方面表现出有效性.
- 增加了探测器蚀刻时间,从而提高了通过UV-VIS光谱学估计α粒子暴露的效率.
结论:
- 紫外线-VIS光谱光度测量为使用CR-39探测器估计α粒子暴露提供了一个可行的,非侵入性的替代方案.
- 该方法的灵敏度受到探测器处理参数的影响,特别是蚀刻时间.
- 这种技术具有快速高效的α粒子剂量测量潜力.
更多相关视频
10:33Expedited Radiation Biodosimetry by Automated Dicentric Chromosome Identification ADCI and Dose Estimation
Published on: September 4, 2017
15.7K
06:21Diffuse Optical Spectroscopy for the Quantitative Assessment of Acute Ionizing Radiation Induced Skin Toxicity Using a Mouse Model
Published on: May 27, 2016
8.1K
相关概念视频
01:14UV–Vis Spectrometers
1.3K
The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell.
1.3K
01:02Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview
2.6K
Ultraviolet–visible (UV–visible or UV–Vis) spectroscopy is an analytical technique that investigates the interaction between matter and UV–Vis light within the electromagnetic spectrum. This method is widely used for its versatility, simplicity, and relatively quick data acquisition, making it valuable for both qualitative and quantitative analysis. When UV–Vis radiation passes through a material, molecules absorb light depending on the energy required for...
2.6K
02:59Biological Effects of Radiation
15.4K
All radioactive nuclides emit high-energy particles or electromagnetic waves. When this radiation encounters living cells, it can cause heating, break chemical bonds, or ionize molecules. The most serious biological damage results when these radioactive emissions fragment or ionize molecules. For example, α and β particles emitted from nuclear decay reactions possess much higher energies than ordinary chemical bond energies. When these particles strike and penetrate matter, they...
15.4K
01:30UV–Vis Spectrum
1.1K
When light passes through a substance, a portion of the light is absorbed while the remaining light is reflected or transmitted. If the molecule absorbs light between the wavelengths of 180–400 nm range, the UV spectrum is obtained, and if it absorbs light in the 400–780 nm wavelength range, the visible spectrum is obtained.
The UV–Vis spectrum of a molecule is the plot of its absorbance versus wavelength. The plot is drawn by taking molar...
The UV–Vis spectrum of a molecule is the plot of its absorbance versus wavelength. The plot is drawn by taking molar...
1.1K
01:21Atomic Absorption Spectroscopy: Lab
349
For AAS measurements, samples must be introduced as clear solutions, often requiring extensive preliminary treatment to dissolve materials like soils, animal tissues, and minerals. Common methods for sample preparation include treatment with hot mineral acids, wet ashing, combustion in closed containers, high-temperature ashing, or fusion with reagents.
Solutions containing organic solvents, such as low-molecular-mass alcohols, esters, or ketones, enhance absorbances by increasing...
Solutions containing organic solvents, such as low-molecular-mass alcohols, esters, or ketones, enhance absorbances by increasing...
349