The production and spatial distribution of observed molecular fragments in cometary comae

Details The production and spatial distribution of observed molecular fragments in cometary comae The production and spatial distribution of observed molecular fragments in cometary comae

May 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979phdt.........6c&link_type=abstract

Ph.D. Thesis Toledo Univ., OH.

Physics

3

Comet Heads, Comets, Particle Density (Concentration), Photochemical Reactions, Spatial Distribution, Brightness, Ions, Monte Carlo Method, Neutral Particles, Spectrograms, Vapors

Scientific paper

The brightness profiles of ions and neutrals were constructed from spectrograms of Comets Bennett and West. A re-evaluation of photochemical models of the cometary coma was done. Monte Carlo simulations of realistic photochemical models showed that Haser's model can adequately describe the spatial distribution of neutral species, but that the 'measured' scale lengths are only 'lower limits' to the actual scale lengths found from the velocity of a species and its lifetime against photodissociation by the solar ultraviolet. The apparently short parent scale lengths found to date are in fact consistent with theoretical photodissociation lifetimes.

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