Crystallization of binary ionic mixtures in dense stellar plasmas

Details Crystallization of binary ionic mixtures in dense stellar plasmas Crystallization of binary ionic mixtures in dense stellar plasmas

Apr 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...271l..13s&link_type=abstract

Astronomy and Astrophysics, Vol. 271, p. L13 (1993)

Astronomy and Astrophysics

Astrophysics

42

Dense Matter, Phase Diagrams, White Dwarfs

Scientific paper

The crystallization diagrams of arbitrary dense binary ionic mixtures are examined within the framework of the density-functional theory of freezing. The behaviour of the phase diagram is shown to depend strongly on the charge ratio in the mixture. As the charge ratio Z1/Z2 is lowered, the phase diagram evolves from a spindle shape into an azeotropic phase diagram and finally into a eutectic phase diagram. This has import ant consequences on the crystallization of trace elements in White Dwarfs, and on the subsequent gravitational energy release, leading to a substantial modification of the cooling history of these stars.

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