CY6111 : Electron Spectroscopy

Photoelectric effect: Need for electron spectroscopy, basic principles of electron

spectroscopy, classification of various spectroscopic techniques, history.Photoelectron spectroscopy: Electron energy analysis; photon sources — UV, X-ray, synchrotron; vacuum – angular dependence – cross section and its determination; valence and core photoemission – Koopmans‘ theorem; final state effects; photoelectron diffraction; band structure- holography- circular dichroism – supersonic molecular beam spectroscopy – coincidence studies. Applications of photoelectron spectroscopy – catalysis, surface structure. Size dependence of electronic structureAuger electron spectroscopy: introduction – instrumentation – classification of various transitions – quantification – applications.

Electron energy loss spectroscopy: Franck and Hertz experiment — instrumentation – selection rules-theory – studies on molecules – surface states – high resolution spectroscopy – adsorption and catalysis –applications.

Related techniques: Inverse photoemission – multiphoton ionization – electron momentum spectroscopy – photoionization-photodetachment – zero kinetic energy photoelectron spectroscopy – spin resolved photoemission – recent advances in instrumentation-brighter photon sources. Several of form of infra-red spectroscopy, viz., transmission, diffuse reflectance (DRIFT), reflection-absorption (RAIRS) and multiple internal reflection (MIR).

Text Books:

1. Stefan Hufner, Photoelectron Spectroscopy, Springer-Verlag, Heidelberg, 1995
2. K. Ghosh, Introduction to Photoelectron Spectroscopy, Wiley Interscience, 1983.
3. D. Baker and C. R. Brundle, Eds, Electron Spectroscopy, Vol. 1 – 4 Academic Press, 1978.
4. Ibach, Electron Energy Loss Spectroscopy, Springer Verlag, 1992.
5. Briggs and M. P. Seah, Editors, Practical Surface Analysis, 2nd ed. vols 1 & 2, Auger and x-ray photoelectron spectroscopy, John Wiley & Sons, 1990.