By Sandra S Eaton; Gareth R Eaton; Lawrence J Berliner
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Additional resources for Biomedical EPR Part B Methodology, instrumentation, and dynamics
Example text
The detection system in the CW-SR experiment does not use magnetic field modulation, because the modulation could function as a relaxation process or cause passage effects. Thus, an SR spectrometer does not benefit from the noise-rejection achieved by phase-sensitive detection at the modulation frequency that is used in most CW spectrometers. Also, it is necessary to use very low observe powers to avoid perturbing the system in a CW-SR experiment. However, the detector filter time constant, chosen appropriate to the signal recovery time constant, usually is much longer for CW detection than for echo detection.
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