Abstract
A method for polarizing thermal ions in buffer gases directly by optical pumping is presented in detail. The production and storage of Sr+ (and Ba+) ions in noble gases, their diffusion and relevant collision processes are discussed. An arc discharge hollow cathode for the generation of intense ionic resonance lines is described. The Sr+ (52 S 1/2) and electron spin polarizations are treated by rate equations. Fitting the solutions to experimental data obtained from transient signals yields an estimate of a few times 103Å2 for the Sr+ion-electron spin exchange cross section.
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I would like to thank Prof. G. zu Putlitz for suggesting this experiment, Doz. Dr. H. Ackermann for encouragement and critical discussions, Dr. N. S. Laulainen for help with the measurements, Dr. Ing. W. Farr for support in electronics, and Dr. S. L. Kaufman for discussions and critical reading of the English version of this paper. This work was sponsored by the Deutsche Forschungsgemeinschaft.
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Weber, E.W. Optical pumping of ions in buffer gases. Z. Physik 256, 1–21 (1972). https://doi.org/10.1007/BF01394493
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DOI: https://doi.org/10.1007/BF01394493