Al-26 and the partial ionization of the solar nebula

Details Al-26 and the partial ionization of the solar nebula Al-26 and the partial ionization of the solar nebula

Oct 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978m%26p....19..253c&link_type=abstract

(Conference on Protostars and Planets, Tucson, Ariz., Jan. 3-7, 1978.) Moon and the Planets, vol. 19, Oct. 1978, p. 253-259.

Physics

15

Aluminum 26, Gas Ionization, Interplanetary Magnetic Fields, Magnetic Effects, Nebulae, Solar System, Electron Density (Concentration), Ionic Reactions, Potassium 40, Reaction Kinetics, Reynolds Number, Solar Magnetic Field

Scientific paper

It is shown that an even distribution of the amount of Al-26 equal to 10 to the minus tenth power of the amount of H (the amount of Al-26 suggested by scaling from cosmic abundances) will lead to a small but significant partial ionization of the nebular gas. Calculation of the ionization state and consequent magnetic Reynolds number for the solar nebula shows that the presence of Al-26 will result in strong coupling of the gas to magnetic fields. In the absence of Al-26, K-40 will still result in substantial ionization, but the degree of magnetic coupling is much more model dependent.

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