网络吸收边 网络释义 1. 吸收边 ...物质粒子吸收能力的主要因素为该物质原子的 K 层吸收边(K absorption edge) 位置 ,即取决于物质的 K 层吸收是否 覆盖射 … wenku.baidu.com|基于 1 个网页
The low energy features of XANES (X-ray absorption near edge structure) in the X-ray K -absorption edge of transition metal systems have long been detected and attempts have been made to explain their origin. Only recently have some theoretical approaches based upon multiple scattering (MS) ...
The fine structure in the titanium x-ray K -edge absorption has been measured in Ti 1 x Nb x O 2 mixed dioxides ( x =0鈥 0.1) with rutile structure in a laboratory-type spectrometer by total electron quantum-yield measurement. The position of the XANES lines is shown to be in good...
The lithium K absorption edge has been studied as a function of momentum transfer in a high-resolution inelastic-electron-scattering experiment and found to exhibit no significant change with momentum transfer up to 1.2 Å-1. This result places severe restrictions on theories which interpret the ...
It has been found that a striking correlation exists between the plasman energy in solids and the chemical shifts of the X-ray K-absorption edges of the transition elements Cr, Cu, Ni, Co, Zn and their compounds. Fairly good agreement between the calculated values of the plasmon energies ...
The shift of the K-absorption edge (ΔEk) was measured in ternary alloys of Ga30Se70-xInx (x = 0, 5, 10, 15, 20) with respect to the binary Ga30Se70 alloy. It was observed that the K-edge of selenium shifted progressively towards the lower energy side as the indium concentratio...
The effect of monochromatic X-ray irradiation on iodine occurred with the X-ray of 33.2 keV which corresponds to the energy just above the K-absorption edge energy of this element. Results of experiments using three different energy levels (33.0, 33.2 and 33.4 keV) demonstrated that spheroid de...
absorption energy, this approach allows using the theoretical approximation of 3.9 electrons29for sufficiently accurate anomalous occupancy refinements. In summary, we collected a complete SAD dataset at a wavelength of 3.35 Å, which is close to the K absorption edge (3.44 Å), resulting ...
The measured maximum reflectance at various wavelength values around the boron-K absorption edge is compared to calculated values from model systems. The measured reflectance profiles of La/B and La/B(4)C show a maximum at a slightly larger wavelength than calculations would predict based on the...
K-edge成像是基于同步辐射的技术。同步辐射波几乎可覆盖整个电磁频谱。K-edge成像使用单色仪把这种多色辐射调谐到一个特定的波长,以实现对一种单一物质(颜料)的可视化。可用K-edge成像对绘画进行扫描,以映射个别元素的分布,从而实现特定颜料分布的可视化。 3.应用 K-edge成像可用不同的图像分别显示不同种绘画颜料的...