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#Mon Aug 09 12:16:52 CEST 2010
Text__BhuxkKOfEd-WfYQ0GneCwQ_title=Functional Principle of the Paul Trap<p></p>
Text__BhuxkKOfEd-WfYQ0GneCwQ_text=Inside the Paul trap a saddle-type electrical quadrupole field is generated. By means of high-frequency reversal of polarity, "falling down" of the charged particle is prevented in that the respective unstable direction (downhill) is being constantly changed into the stable direction (uphill). <p></p> <p>The functional principle is thus a rotating saddle, in effect.</p>