The structure of Phaethon and detonation of its icy envelope

Details The structure of Phaethon and detonation of its icy envelope The structure of Phaethon and detonation of its icy envelope

Mar 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986em%26p...34..213d&link_type=abstract

Earth, Moon, and Planets (ISSN 0167-9295), vol. 34, March 1986, p. 213-222.

Physics

10

Land Ice, Planetary Structure, Planetary Temperature, Asteroid Belts, Detonation, Electrolysis, Equations Of State, Planetary Mass

Scientific paper

It is suggested that Phaethon (a hypothetical planet whose breakup gave rise to the asteroid belt) has a structure similar to that of Callisto, and thus consisted of a rocky core (40 percent in mass) and an ice envelope (60 percent). Total breakup of the planet becomes possible in an explosition of the electrolysis products accumulated in the ice in the form of a solid solution if the planet mass was M less than about 0.5. Assuming M = 0.5 lunar masses, a value of 1750 km is obtained for the planet's radius with the envelope's thickness of 750 km. Application of the hydrodynamic theory of detonation to the (2H2 + O3) solution in ice reveals that, depending on the actual critical temperature, which for conventional explosives lies in the range 700-900 K, the minimum (2H2 + O2) concentration in ice required for its explosion is 13-18 percent.

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