Cross-section for the dissociative photoionization of hydrogen by 584 Å radiation: The formation of protons in the Jovian ionosphere

Details Cross-section for the dissociative photoionization of hydrogen by 584 Å radiation: The formation of protons in the Jovian ionosphere Cross-section for the dissociative photoionization of hydrogen by 584 Å radiation: The formation of protons in the Jovian ionosphere

Jan 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974p%26ss...22..143m&link_type=abstract

Planetary and Space Science, Volume 22, Issue 1, p. 143-149.

Physics

8

Scientific paper

The cross-section for dissociative photoionization of hydrogen by 584 Å radiation has been measured, yielding a value of 5 × 10-20 cm2. The process can be explained as a transition from the X1 Σg+ ground state to a continuum level of the X2 Σg+ ionized state of H2 The branching ratio for proton (H+) vs molecular ion (H2+) production at this energy is 8 × 10-3. This process is quite likely an important source of protons in the Jovian ionosphere near altitudes where peak ionization rates are found.

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