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ESR and ENDOR experiments using a disc-shaped resonator working in the Whispering Gallery Mode (WGM) |
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| Authors: | A Colligiani I Longo M Martinelli L Pardi |
| Institution: | 1. Institute of Agricultural Industries, University of Naples, Via dell’Università, 80055, Portici (NA), Italy 2. Atomic and Molecular Physics Institute, National Research Council (C.N.R.), Pisa, Italy 3. Department of Physics, University of Pisa, Pisa, Italy |
| Abstract: | Different instrumental apparatuses are presented employing disc-shaped dielectric resonators working in the Whispering Gallery Mode (WGM). The conditions suitable to take the best from the microwave power obtained from a trade klystron in the X-band have been verified for the ESR part of the experiments. It is well known that a good ESR saturation condition is an essential prerequisite to have satisfactory ENDOR results. The WGM dielectric resonators seem to be very suitable for multiple irradiation purposes and in particular for ENDOR experiments which is the aspect we wanted to exploit here. Various radiofrequency ENDOR irradiation circuits have been tested and the obtained spectra of a γ-irradiated single crystal are presented and criticized. Some results for very high frequency ESR applications are also reported. |
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