Pulsed EPR spectrometer

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Abstract
A pulsed EPR spectrometer is described. This spectrometer is designed for the study of relaxation times of dilute solutions of samples in common solvents as a function of temperature both above and below room temperature. Resolution of pulse widths and spacings is 1 ns. Both continuous wave (cw) and pulsed electron spin‐echo studies can be done on the same sample on the same spectrometer. Details of component choices and timing synchronization are provided. Phase alternation sequences for eliminating unwanted echoes are described. Examples of performance of the spectrometer are presented.