ESR imaging spectroscopy

A few coils were designed to generate magnetic field gradients for ESR Imaging and an electronic circuit was constructed for pulsation to avoid heating of coils, a cavity and its samples. The coils made of felxible print sheets were attached to the inside wall of double quartzs cooling tube inserted in a universal cavity (TE011). The coil produced a magnetic field gradient of about 100 G. cm-1 along the static magnetic field by a peak current of 10A. Another coil was constructed with copper wire to be attached to the external wall of a rectangular cavity (TE012) in order to generate a magnetic field gradient of about 50 G. cm-1 along the axis of the sample hole. (author)