X-Ray Photoelectron Spectroscopy (XPS/ESCA) (2 days)  
       
    AES is used to determine the atoms present at a surface, their concentrations, their chemistry, and their lateral and depth distributions.  
    Hours: 8:30 am-5pm, Lunch on your own  
    Printed notes will be provided to participants  
         
    Day 1:    
       
      Introduction ö terminology, surfaces, types of surfaces. 0.5 hour  
      The principles of XPS ö production of photoelectrons, peak labeling, electronic figuration of atoms, atoms, molecules, solids, energy, spectra, Auger process, valence spectra, handbooks, books, surface sensitivity, information depth, sample handling, spin-orbit splitting, chemical shift, plasmons, multiplet splitting, shake-up. 3 hours  
      Instrumentation ö dual anode, Bremsstrahlung, monochromatic source, electron energy analyzers, spectrum acquisition, energy resolution, scattering in analyzers, electron detectors, pulse counting, position sensitive detectors, small area analysis, area location, imaging XPS, methods, equipment and examples, vacuum system, samples, energy scale calibration. 3.5 hours  
       
       
    Day 2:    
       
      Qualitative analysis ö identification of elements, changing x-ray sources, charging, interpretation of chemical shift, relaxation effects, Auger parameter, peak widths, lineshapes. 2 hours  
      Quantitative analysis ö sensitivity factors, ionization cross section, asymmetry parameter, analyzer transmission, reference spectra, intensities, background subtraction, detection limit, effect of thin overlayers. 2 hours  
   
Artifacts ö x-ray damage, charging, methods for charge control, ghost peaks. 0.5 hour  
   
Data acquisition and processing ö processing data, Tougaard background subtraction, satellite subtraction, peak area, lineshapes, curve fitting, deconvolution. 1 hour  
   
Depth profiling ö non-destructive and destructive methods, angle resolved XPS, diffraction, elastic scattering, thickogram, inelastic loss method, sputtering, depth calibration. 2 hours  
   
Applications ö some further examples of applications of XPS. 0.5 hour  
   
Instrument selection and summary ö factors to consider, general summary. 0.2 hours