Experimental Determination of the P—T Melting Curves of Kr, Ne, and He

Pressure—temperature melting data have been obtained at pressures of 0–8 kbar for Kr, 0–10 kbar for Ne, and 1–10 kbar for He. The estimated accuracy of the data is ± 1 bar and ± 0.002 to ± 0.011oK. Use of a modified Simon melting equation of the form P=A(T+D)c+B to represent the data removes nearly all of the systematic deviations which are observed when the usual Simon melting equation P=ATc+B is applied. The modified form of the equation also provides much better high pressure extrapolations from the melting curve data.