SPIN POLARIZATION IN FLAMES BY OPTICAL PUMPING
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Abstract
We have observed spin polarization of sodium atoms in hydrocarbon flames at atmospheric pressure by laser optical pumping with circularly polarized light. Spin relaxation times were measured as a function of position within the flame and were found to vary from 40 ns to 500 ns. The RF magnetic resonance transitions of sodium in the flame were also observed. Possibilities of applying this new technique to derive information about species present in the flame are discussed.
Description
This research was supported by the U.S. Air Force Office of Scientific Research under Grant AFOSR-74-2685 with supplementary support by the Joint Services Electronics Program under Contract DAAG29-77-C-0019. S. M. Curry: Alfred P. Sloan Foundation Fellow (1975 - 1979), on leave from the University of Texas at Dallas, Richardson, Texas. T. Yabuzaki: On leave from the Ionosphere Research Laboratory, Kyoto University, Kyoto, Japan.""
Author Institution: Department of Physics, Columbia University, New York