A SIMPLE ALIGNMENT PROCEDURE FOR THE PRECISION POSITIONING OF THE SAMPLE AT ARBITRARY POINTS OF THE INTRACAVITY SPACE OF A TE104 DOUBLE RECTANGULAR CAVITY

A significant source of errors in quantitative electron paramagnetic r esonance measurements is incorrect sample positioning in the microwave cavity. In this article a modification to our previously described sa mple alignment tool which allowed the precise and reproducible positio ning of cylindrical samples along the vertical central axis of the rec tangular cavity is described. These revisions allow cylindrical sample movement in the horizontal (y,z) plane which is perpendicular to the cavity x axis. Using this upgrade, the new sample setup procedure is n ow able to position samples precisely and reproducibly at arbitrary po ints in the intracavity space. (C) 1997 American Institute of Physics.