Anomalous Spin-Lattice Relaxation Induced by Helium Gas in Microporous Carbon
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概要
- 論文の詳細を見る
Microporous activated carbon fibers with huge specific surface area (3000 m^2/g) have dangling bond spins at the peripheries of micro-graphitic domains. Spin-lattice relaxation of the dangling bond spins was studied by ESR measurements in the presence of various gases, He, Ne, Ar, H_2, N_2, O_2. The introduction of helium gas strongly enhances the spin-lattice relaxation rate 1/T_1, suggesting the contribution of the collisional process to the spin-lattice relaxation mechanism. The introduction of a simple model on the basis of the electric dipole-dipole interaction makes the calculation of 1/T_1 possible and the obtained result can explain the experimentally observed result.
- 社団法人日本物理学会の論文
- 1995-07-15
著者
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Sugihara Ko
College Of Pharmacy Nihon University
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Enoki Toshiaki
Department Of Chemistory Tokyo Inst.of Technology
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Nakayama A
Gifu Univ. Gifu
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Nakayama Atsuko
Department Of Chemistry Tokyo Institute Of Technology
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