“~ 3 He-气凝胶”体系在1.5K下的热化
Thermalization of the system "3He-aerogel" at 1.5 K
摘要：
在目前的工作中，我们提出了一种新的方法来研究在多孔介质中吸附的~ 3 He膜的热力学平衡设置的过程。用这种方法研究了1.5K时吸附在SiO2气凝胶表面的~ 3 He的热化过程。热力学平衡设定的过程通过测量实验室中的压力、NMR信号的幅度以及吸附的~ 3 He的核自旋-自旋和自旋-晶格弛豫时间来控制。“吸附氦-3-气凝胶”体系热力学平衡建立的特征时间为26 min。
英文摘要：
At the present work we propose a new method for studying the processes of thermodynamic equilibrium setting in the adsorbed 3He film in a porous media. By this method we have studied the thermalization of the adsorbed 3He on the silica aerogel surface at the temperature 1.5 K. The process of the thermodynamic equilibrium setting was controlled by measuring of the pressure in the experimental cell, the amplitude of the NMR signal and the time of the nuclear spin-spin and spin-lattice relaxation times of an adsorbed 3He. The thermodynamic equilibrium setting in the system "adsorbed helium-3 - aerogel" has the characteristic time 26 min.
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