Abstract
The optogalvanic technique combined with the excitation by means of a single-frequency dye laser has been used to investigate the nonlinear Hanle effect on a variety of atomic transitions involving various quantum numbers and selection rules. A rate equation model has been successfully applied to provide a quantitative analysis of the observed signals. Saturation and pressure broadening parameters are reported for Ne transitions at 607.4 and 603.0 nm and Ca transitions at 610.2 and 585.7 nm
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Work partially supported by INFN and Italian Ministery of Education