Low temperature binary gas mixtures

[摘要] Application of partial pressure technology to combinations of one gas above its critical temperature (helium) mixed with a two-phase liquid (nitrogen) can result in liquid temperatures down to and below the nitrogen triple point. The thermodynamics of this process is developed and an experimental apparatus is described which was used to produce a helium/nitrogen bath temperature of 59.17 K, 4 K lower than the 63.2 K nitrogen triple point and lower than any liquid nitrogen temperature reported in the literature.

[发布机构] McIntosh Cryogenics, LLC, 4699 Nautilus Ct S. #503, Boulder; CO; 80301, United States^1

[效力级别] 物理学 [学科分类] 材料科学（综合）

[关键词] Bath temperatures;Binary gas mixture;Critical temperatures;Experimental apparatus;Liquid nitrogen temperature;Liquid temperature;Low temperatures;Two-phase liquid