COMPARATIVE-ANALYSIS OF PULSED ELECTRON-SPIN-RESONANCE SPECTROMETERS AT X-BAND AND S-BAND

Comparative analysis of pulsed electron spin resonance spectroscopy at X-band and at S-band indicates that despite the lower sensitivity at the lower frequency, electron spin echo spectroscopy at S-band provide s valuable information on the electron-nuclear interactions in systems where the electron spin echo modulation is too small to study well at X-band. It is shown that independent experimental data on electron sp in echo modulation and decay at both X-band and S-band put additional constraints on the structural parameters obtained by comparison of exp erimental and simulated nuclear modulation patterns, and can also help to elucidate the electron spin relaxation mechanism.