Introduction to Fundamental Interactions in Atomic Collisions
In these introductory lectures an effort will be made to provide a review of background material which may be useful in following the other lectures to be given in this institute. We begin with a description of collision processes that is intentionally formulated in terms general enough to encompass the interactions of particles, photons, and composite systems, as they make their appearance in nonradiative and radiative atomic and molecular collision processes. The emphasis is on multichannel processes, and it is assumed that the reader has some familiarity with the less general formulations of the theory, such as those appropriate for elastic and inelastic scattering and ionization.1 Decay processes will also be treated as “half-collisions”, and the connection between the T matrix and decay rates will be established. The results will be expressed in terms of the density matrix as the most convenient tool for an analysis of experiments.
KeywordsWave Packet Atomic Collision Transition Matrix Element Collision Experiment Collision Theory
Unable to display preview. Download preview PDF.
- 1.E. Merzbacher, “Theory of Coulomb Excitation and Ionization” in Fundamental Processes in Energetic Atomic Collisions, p. 319–348, H. O. Lutz, J. S. Briggs, and H. Kleinpoppen, eds., Plenum Press, New York, 1983.Google Scholar
- 2.J. R. Taylor, Scattering Theory, John Wiley and Sons, New York, 1972.Google Scholar
- 3.K. Blum, Density Matrix Theory and Applications, Plenum Press, New York, 1981.Google Scholar
- 5.J. J. Sakurai, Advanced Quantum Mechanics, Addison-Wesley Publishing Co., Reading, 1967.Google Scholar
- 6.H. A. Bethe and E. E. Salpeter, “Quantum Mechanics of One- and Two-Electron Systems” in Handbuch der Physik, vol. XXXV, p. 88–436, S. Flügge, ed., Springer-Verlag, Berlin, 1957.Google Scholar
- 8.M. H. Chen, “Relativistic Effects in Atomic Inner-Shell Transitions” in X-Ray and Atomic Inner-Shell Physics- 1982, p. 331–345, AIP Conference Proceedings, B. Crasemann, ed., American Institute of Physics, New York, 1982.Google Scholar
- 9.G. Nienhuis, “The Possibility of a Complete Determination of Scattering Amplitudes for S→D Excitation by Electron- Photon Coincidence Measurements” in Coherence and Correlation in Atomic Collisions, H. Kleinpoppen and J. F. Williams, eds., Plenum Press, New York, 1980.Google Scholar
- 10.For a recent application see C. C. Havener, W. B. Westerveld, J. S. Risley, N. H. Tolk, and J. C. Tully, Phys. Rev. Lett. 48, 926 (1982); C. C. Havener, N. Rouze, W. B. Westerveld, and J. S. Risley, Phys. Rev. Lett. _53 1049 (1984); J. Burgdörfer and Louis J. Dube, Phys. Rev. Lett. 52, 2225 (1984).Google Scholar
- 11.A. Aspect, P. Grangier, and G. Roger, Phys. Rev. Lett. 47, 460 (1981); A. Aspect, P. Grangier, and G. Roger, Phys, Rev. Lett. 49 91 (1982); A. Aspect, J. Dalibard, and G. Roger, Phys. Rev. Lett. 49, 1804 (1982).Google Scholar
- 12.W. Perrie, A. J. Duncan, H. J. Beyer, and H. Kleinpoppen, Phys. Rev. Lett. 54, 1790 (1985); see also the paper by A. J. Duncan, W. Perrie, H.J. Beyer and H. Kleinpoppen, in these Proceedings.Google Scholar