The 3D model of BP was built, the supercell model of BP was rebuilt, and created a core hole on a boron atom and the phosphorus atom using supercell model of BP. The 1s core level spectroscopy of BP with and without a core hole have been calculated using the first principles by simulation. Studying on the 1s core level spectroscopy of BP with and without a core hole, the core hole effects were investigated by comparison of the 1s core level spectroscopy of BP with and without a core hole. The core hole effects affect peak position and the width of energy of the 1s core level spectroscopy for BP. The core hole effects is that the peak position moves toward low energy and the width of energy becomes smaller.
The four kinds of atoms, such as carbon (C), oxygen (O), copper (Cu) and sodium (Na), are adsorbed on the Si (001) surface, the curves of the band structure and density of states with different elements were plotted. From the curves, the pseudogap, forbidden bandwidth, energy curve of the ups and downs, the trend of Fermi level in the graphics and density of states at the Fermi level were analyzed and compared for different elements absorption. Through comparative analysis, the conclusions were come to. Research Conclusions: the property of absorption element decides the localization properties of electronic, the pseudogap, forbidden bandwidth, Energy curve of the ups and downs, the trend of Fermi level in the graphics, density of states at the Fermi level and etc.
The spatially modulated polarization interference imaging spectroscopy (SMPIIS) is based on the polarization
interferometer.The core of the polarization interferometer is the Savart polariscope. When light passing through
polarizer,the natural light becomes linearly polarized in the direction of the polarization orientation of a linear polarizer.
The linearly polarized ray is split into two polarized components by a Savart polariscope. After going through the
analyzer,the two rays get linearly polarized in the polarized orientation of the analyzer and are focused by the imaging
lens to form the interferogram and target image. From analyzing the mechanism of formation the interferogram and
target image,we find the discrete between ordinary ray (o-ray) and extraordinary ray (e-ray) greatly influence the
intensities and the results of the interferogram and target image. The wave vector of e-ray is obtained by the extension
of Snell's law in the Savart polariscope. According to the relation between the wave vector of e-ray and e-ray,the
direction of e-ray is solved. After the directions of o-ray and e-ray are given, the formula of the discrete between o-ray
and e-ray can be got by calculating.