Hydrogen and Helium under high pressure: A case for a classical theory of dense matter |
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| Authors: | Vladan ?elebonovi? |
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| Institution: | (1) Institute of Physics, POB 57, 11001 Beograd, Yugoslavia |
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| Abstract: | When subject to high pressure, H2 and 3He are expected to undergo phase transitions, and to become metallic at a sufficiently high pressure. Using a semiclassical theory of dense matter proposed by Savi and Ka anin, calculations of phase transition and metallisation pressure have been performed for these two materials. In hydrogen, metallisation occurs at p
M= (3.0 ± 0.2) Mbar, while for helium the corresponding value is p
M= (106 ± 1) Mbar. A phase transition occurs in helium at p
tr= (10.0 ± 0.4) Mbar. These values are close to the results obtainable by more rigorous methods. Possibilities of experimental verification of the calculations are briefly discussed. |
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