1.ULVCA-PHI company, formerly known as American Physical Electronics Company, has product models: phi-5000Versaprobe series and Quantera series;
2. Shimadzu Company, formerly British Kratos Company, is also an instrument company acquired by Japanese companies. The main representative products are Kratos-UltraDLD;
3.Thermal VG has many products, such as K alpha, Theta 300, Theta 300 XT, Theta Probe, Escalab 250 and so on.
XPS can be used to measure:
1, qualitative analysis of elements. According to the position of characteristic spectral lines in the energy spectrum, all elements except H and He can be identified.
2. Quantitative analysis of elements. Reflect the content or relative concentration of atoms according to the photoelectron spectral line intensity (the area of photoelectron peak) in the energy spectrum diagram.
3. Solid surface analysis. Including the chemical composition or elemental composition of the surface, the distribution of atomic valence state and surface energy state, the electron cloud distribution and energy level structure of the surface electrons, etc.
4. Structure of the compound. It can accurately measure the chemical shift of electron binding energy in the inner layer and provide the information of chemical bond and charge distribution.
5. Application in molecular biology. Example: XPS identified a small amount of Co in vitamin B 12.
The price of PHi5000 in the United States is around $600,000, while Qutum2000 is more expensive.