The Energy-Loss Mechanism in X-ray Photoelectron Spectroscopy.

X - Ray Photoelectron Spectroscopy of Silicate Glasses

X-ray photoelectron spectroscopy (XPS) is a powerful technique capable of providing unique information about the structural chemistry of glasses. However, inappropriate procedures for the preparation of sample surfaces or the lack of reliable methods to overcome electrostatic charging effects during analysis of dielectric materials can cause spurious features to be introduced or intrinsic featu...

Surface and core hole effects in X-ray photoelectron spectroscopy

Research on the crosslinking mechanism of polyacrylamideresol using molecular simulation and X-ray photoelectron spectroscopy

Resol crosslinked polyacrylamide (PAM) hydrogel can be used as the chemical flooding agent in enhanced oil recovery because of its excellent temperatureand salt-resistant properties. It is known that crosslinking reactions, including ortho–ortho, ortho– para and para–para polycondensation of resols and ortho and para polycondensation between PAM and resol, are involved in the researched system,...

Soft X-ray Photoelectron Spectroscopy in Silicon Clathrate Superconductors

Silicon clathrate compounds consist of fullerenelike polyhedral Si-cages, which share their faces to form a three-dimensional Si-sp 3 covalent network. Guest elements such as an alkali atom or an alkaliearth one can be encapsulated in the cage. Recently, these compounds have attracted strong interest due to the discovery of superconductivity in a metal-doped silicon clathrate, Ba6Na2Si46 [1], a...

X-ray induced damage in DNA monitored by X-ray photoelectron spectroscopy.

In this work, the chemical changes in calf thymus DNA samples were analyzed by X-ray photoelectron spectroscopy (XPS). The DNA samples were irradiated for over 5 h and spectra were taken repeatedly every 30 min. In this approach the X-ray beam both damages and probes the samples. In most cases, XPS spectra have complex shapes due to contributions of C, N, and O atoms bonded at several different...