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In this study ,K and L shell photoeffect cross-sections were measured for the elements in the range of 50≤ Z≤65 at 59.5 keV .These photoeffect cross-sections were measured by using the experimental σKα...  相似文献
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In this study, the semi-empirical and empirical calculations of K X-ray intensity ratios, K-shell fluorescence yields, and vacancy transfer probabilities have been performed for 3d transition elements. Also, σ, σ production cross-sections, Kβ/Kα intensity ratios, ωK fluorescence yields, and ηKL vacancy transfer probabilities of 3d transition elements have been measured. The samples were excited by 59.5 keV γ-rays from a 241Am annular radioactive source. K X-rays emitted by samples were counted by an Ultra-LEGe detector with a resolution of 150 eV at 5.9 keV.  相似文献
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报导了钴、镍、铜、锌络合物中的化学效应对Kβ/Kα强度比和Kβ能量位移的影响. 实验样品用241Am环状放射源发出的能量为59.5 keV的γ射线激发. 对样品发射的K段X射线进行检测的检测器在5.9 keV处的分辨率为150 eV. 观察了不同配体对钴、镍、铜、锌络合物的Kβ/Kα强度比和Kβ能量转移的影响,并试图解释这些配体的性质对中心原子产生的化学效应. 对实验得到的Kβ/Kα强度比数据,理论计算获得的Kβ/Kα强度比数据及其它实验得到的纯钴、镍、铜、锌的Kβ/Kα强度比数据进行了比较.  相似文献
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It is known that zinc alloys with iron group metals have better corrosion resistance than pure zinc. Owing to the corrosion resistance of these alloys, Zn–Fe coatings are widely used in automotive industry and have excellent mechanical performance. In this work, we investigated the relationship between the changes in the measured X‐ray fluorescence parameters (Kβ/Kα, σ and σ) and the changes in the structural parameters such as microstrain or grain size values for Zn–Fe alloys that were prepared with different pH values. To explain these changes, the Kα and KβX‐ray production cross sections, and the Kβ/KαX‐ray intensity ratio values were calculated by three different ways for the elemental forms of Zn and Fe. The structural parameters, such as microstrain and grain size, were also calculated. We expect that the outer shell electronic distribution affects the structural parameters of the produced Zn–Fe alloys, changing the measured Kα and KβX‐ray production cross sections, and the Kβ/KαX‐ray intensity ratio values. We also show that Zn–Fe alloy mi nimum microstrain value corresponds to the maximum changes in KβX‐ray production cross‐section values of Fe and Zn. Copyright © 2017 John Wiley & Sons, Ltd.  相似文献
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