Abstract
We have created solid 4He from the superfluid at fixed temperature by adding helium to a cell of fixed volume through Vycor fill lines. Affixed to the cell are two capacitive pressure gauges. We monitor the P, T coordinates of the solid by use of a thermometer on the cell and the two in situ pressure gauges. We observe apparently random, sharp pressure drops as the cell nearly fills with solid, and after the solid has finished growing and is off the melting curve. These pressure drops are accompanied by transient changes in the temperature of the cell. We will describe the details of the experiment and report on some of our measurements.
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