This paper presents a method for analyzing the sensitivity of a flexible surface-coil-type resonator (FSCR). It first describes the configuration and the operation principle of the FSCR and then a method for estimating relative sensitivity of the FSCR. In this estimation, the quality factor and the filling factor of the FSCR are formulated because the strength of electron spin resonance (ESR) signals is proportional to the product of these factors. Finally, this paper reports experiments, measuring the ESR spectra of 1,1-Diphenyl-2-picrylhydrazyl powder, confirming the validity of the proposed method.
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Hirata et al. (1995) studied this question.
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