Abstract
Positron lifetimes have been measured in cadmium at temperatures of 77K and 296K and at pressures of up to 9.8 kbar. The positron lifetime at 296K and 9.8 kbar is 178+or-2 ps, significantly longer than the lifetime of 170+or-2 ps observed at 77K and 0 kbar, even though the volume of the sample is smaller in the former case. This result suggests that the effect of temperature is more than that of a simple volume change.