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Information × Registration Number 0221U103942, 0118U002317 , R & D reports Title Development of new dielectric UHF materials for resonators, which will increase the sensitivity of EPR devices, and the creation on their basis mini-EPR analyzer for rapid analysis in medicine and monitoring of the environment. Section 2. Development of a mini-EPR analyzer for express analysis in medicine and environmental monitoring on the basis of UHF resonators with optimized geometry popup.stage_title Head Yukhymchuk Volodymyr O, Доктор фізико-математичних наук Registration Date 28-02-2021 Organization VE Lashkarev Institute of Semiconductor Physics of the National Academy of Sciences of Ukraine popup.description2  Tested dielectric inserts made of ceramics based on barium titanate (BaTi 4 O 9 + 8.5% ZnO) in accordance with previous calculations (cylinder with a through hole along the axis of the cylinder with an outer radius R = 2.85 mm, inner radius r = 0.75 mm and height h = 1.85 mm). MnCl 2 and MgO: Mn powders were used as test samples, which filled a capillary with a diameter of 1.6 mm and a height of 2 mm. The MnCl 2 sample shows the EPR signal from the exchange-linked Mn 2+ ions and is characterized by fast relaxation times, which means that this signal is not saturated at the available microwave powers of modern EPR spectrometers. On the contrary, the signal from isolated Mn 2+ ions in MgO: Mn samples is well saturated. Testing has shown that in the case of DV made of ceramics with low dielectric losses, it is possible to obtain amplification of EPR signals. For the sample whose EPR signal is not saturated (MnCl 2), the gain was ~ 9 times, and for the sample with the saturated EPR signal (MgO: Mn), ~ 1.5. Product Description popup.authors Vorona Igor P. Golovina Iryna S. Lemishko Sergiy V. popup.nrat_date 2021-02-28 Close