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首页> 外文期刊>Magnetic resonance in solids >The home-built pulse nuclear magnetic resonance spectrometer with digital quadrature detection for 3 He research at low temperatures
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The home-built pulse nuclear magnetic resonance spectrometer with digital quadrature detection for 3 He research at low temperatures

机译:带有数字正交检测功能的家用脉冲核磁共振光谱仪,用于低温3 He研究

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The nuclear magnetic resonance (NMR) of *He in contact with porous media could give an unique information about structure, porosity and pore-size distribution of the media [1-4]. It was found [5] that the magnetic relaxation of liquid *He in confined geometry acquires new features compared with the relaxation in bulk liquid, and a new mechanism of magnetic relaxation has been proposed. Thus, the longitudinal relaxation time, the transverse relaxation time and the spectral line width strongly depend on the size of the volume filled by liquid *He.
机译:* He与多孔介质接触的核磁共振(NMR)可以提供有关介质的结构,孔隙率和孔径分布的独特信息[1-4]。文献[5]发现,与大体积液体的弛豫相比,密闭几何结构中* He的磁弛豫具有新的特征,并提出了新的磁弛豫机理。因此,纵向弛豫时间,横向弛豫时间和谱线宽度强烈地取决于由液体* He填充的体积的大小。

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