Effects of different Methods of Preparation of Ice Mantles of Triple Point of Water Cells on the Temporal Behaviour of the Triple-Point Temperatures

摘要

We report results of an investigation of the temporal variation of the temperature of triple point of water (TPW) cells, in which the ice mantles were prepared by four different techniques using: (1) solid carbon dioxide, (2) an immersion cooler, (3) liquid-nitrogen-cooled rods, and (4) liquid nitrogen (LN), first passing cold nitrogen vapours and then LN directly into the wells of the cells.