Polarization, Alignment, and Orientation in Atomic Collisions

1. Introduction.- 2 Polarized Light.- 3 Polarized Electrons.- 4 Experimental Geometries and Approaches.- 5 Density Matrices: Connecting Experiment and Theory.- 6 Computational Methods.- 7. Electron-Impact Excitation.- 8 Ion- and Atom-Impact Excitation.- 9 Propensity Rules.- 10 Impact Ionization.- 11 Related Topics and Applications.- Introductory Summaries.- 1. Prüfung von D-Leuchten, das von einem nahezu parallelen Elektronenbündel angeregt ist, auf Polarisation, Ann. Phys. (Leipzig) 77 (1925); 273–277, 286.- 2. On the Excitation of Polarised Light by Electron Impact, Proc. Roy. Soc. A 112 (1926); 642, 651–660.- 3. On the Excitation of Polarised Light by Electron Impact. II.—Mercury, Proc. Roy. Soc. A 117 (1927); 224–225, 237–244.- 4. Zur Quantenmechanik der Richtungs-entartung, Z. Phys. 43 (1927) 27–46.- 5. On the Quantum Theory of the Polarization of Impact Radiation, Proc. Nat. Acad. Sci. 13 (1927) 800–805.- 8. Effect of Nuclear Spin on the Radiation Excited by Electron Impact, Proc. Nat. Acad. Sci. 18 (1932) 231–237.- 10. Collision Alignment of Molecules, Atoms, and Nuclei, Phys. Rev. 98 (1955) 1853.- 11. The Polarization of Atomic Line Radiation Excited by Electron Impact, Phil. Trans. Roy. Soc. A 251 (1958) 113–124, 129–138.- 12. Production of Highly Polarized Electron Beams by Low-Energy Scattering, Phys. Rev. Lett. 15 (1965) 575–577.- 14. The Perfect Scattering Experiment. I, Comm. At. Mol. Phys. 1 (1969) 41–44.- 15. The Perfect Scattering Experiment. II, Comm. At. Mol. Phys. 1 (1969) 65–69.- 17. Experimental Verification of the Fano Effect, Phys. Rev. Lett. 24 (1969) 87–88.- 19. Measurement of Differential Charge-Transfer Cross Sectionsand Probabilities by Photon-Particle Coincidence Technique, Phys. Rev. Lett. 25 (1970)491–494.- 20. Theory of Atomic Photon-Particle Coincidence Measurements, Phys. Rev. A 4 (1971) 2288–2300.- 21. Differential Measurement of the He 33P Excitation, in He+-He Collisions, by Using an Ion-Photon Coincidence Method, Phys. Rev. Lett. 26 (1971) 1411–1413.- 22. The Variation with Electron Scattering Angle of the Polarisation of Atomic Line Radiation Excited by Electron Impact, J. Phys. B 5 (1972) 1126, 1135.- 23. Measurements of Complex Excitation Amplitudes in Electron-Helium Collisions by Angular Correlations Using a Coincidence Method, Phys. Rev. Lett. 31(1973) 576–579.- 25. Impact Excitation and Polarization of the Emitted Light, Rev. Mod. Phys. 45 (1973) 553–565, 572–573.- 26. Direct Observation of Exchange Scattering by Spin Flip of Polarized Electrons in Excitation of Mercury, Phys. Rev. Lett. 33 (1974) 341–343.- 28. Theory of Electron Scattering from Laser Excited Atoms, J. Phys. B 7 (1974) 2173–2188.- 29. Measurements of Photon Polarization and Angular Correlation for He+-He Collisions Using an Ion-Photon Coincidence Technique, Phys. Rev. Lett. 34 (1975) 444–447.- 30. Polarized-Photon, Scattered-Atom Coincidence Measurements in He+-He Collisions, Phys. Rev. Lett. 35 (1975) 723–725.- 31. Photon Vector Polarization and Coherence Parameters in an Electron-Photon Coincidence Experiment on Helium, Phys. Rev. Lett. 36 (1976) 577–580.- Further Readings.