On the High Pressure Behaviour of Hydrogen and Helium

Details On the High Pressure Behaviour of Hydrogen and Helium On the High Pressure Behaviour of Hydrogen and Helium

Jan 1968

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1968cokon..62....1b&link_type=abstract

Communications of the Konkoly Observatory, No. 62 (Vol. V, 5), p. 1-16 (1968)

Physics

Geophysics

Hydrogen, Helium, Materials At High Pressures

Scientific paper

The purpose of this paper is to obtain an exact equation of state for hydrogen and helium at T= 0 K. For the derivation of the energy-molar volume function a cellular method is applied using the boundary condition (delta rho/delta r)r = =r=rs=0, where rho and rs are the electron density and the radius of the elementar sphere, respectively. This condition may be satisfied by (delta psi/delta r)r=rs=0 or psi(rs)=0. Both cases are examined. The modification of the Balmer series as a function of density is derived, and a qualitative indication suggesting the presence of a pressure ionization obtained, which may be of interest for geophysics too.

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