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Experimental and theoretical analysis of spurious EPR line features caused by field inhomogeneity
Affiliation:1. College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, Hubei 443002, China;2. Material Analysis and Testing Center, China Three Gorges University, Yichang, Hubei 443002, China;1. Laboratoire de Physique et Chimie des Matériaux LPCM, Université Mouloud Mammeri de Tizi-Ouzou UMMTO, B.P. 17, Tizi-Ouzou 15000, Algeria;2. Laboratoire de Physique des Matériaux, Faculté de physique, USTHB, B.P. 32, El Alia, Bab-ezzouar 16111, Alger, Algeria;1. Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350002, China;2. Department of Science and Environmental Studies, The Hong Kong Institute of Education, Hong Kong, China;1. Department of Chemistry, SSN College of Engineering, Kalavakkam-603110, Tamil Nadu, India;2. Department of Chemistry, Anna University, Chennai-600025, Tamil Nadu, India;1. Department of Physics, University of Science and Technology of China, Hefei 230026, China;2. Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology and Research Center of Laser Fusion, Mianyang, 621010, China;3. Science and Technology on Plasma Physics Laboratory, Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China;1. School of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiang Xi, China;2. Department of Chemical and Biochemical Engineering, National Engineering Laboratory for Green Productions of Alcohols-Ethers-Esters, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
Abstract:Theory is developed for the detailed lineshapes arising in EPR instruments having inhomogeneous static field. Validity of the theory is established by a comparison with experiment. Results are presented for TE011 cavities parallel and transverse to the magnetic field and for the TE102 cavity. The results may be generalized with respect to sample size and amount of magnetic field inhomogeneity.
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