To developing the self-sustaining dynamo model (Walter M Elsasser and E C Bulard), we need know the multi-phase state of the planetary(e.g., how to distinguish the charged metallic fluid state during the evolution from melting to liquid-liquid to plasma phase transitions).

But we don't know how to determine the initial condition of the plasma phase transitions? We try to answer this question by studying the Hydrogen (H) and Helium (He) in solar atmosphere, and got some clue for iron, but still not very clear.

Is there anyone can give us some solid description about this problem? Thanks a lot in advance!

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