Velocity distributions of hydrogen atoms and hydroxyl radicals produced through solar photodissociation of water

Details Velocity distributions of hydrogen atoms and hydroxyl radicals produced through solar photodissociation of water Velocity distributions of hydrogen atoms and hydroxyl radicals produced through solar photodissociation of water

Apr 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....98.7415w&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. E4, p. 7415-7435.

Physics

18

Cometary Atmospheres, Hydrogen Atoms, Hydroxyl Radicals, Photodissociation, Velocity Distribution, Water, Energy Distribution, Photoabsorption, Comets, Hydrogen, Velocity, Distribution, Hydroxyl, Oh Radical, Water, Photodissociation, Solar Effects, Energy, Absorption, Ionization, Calculations, Wavelengths, Production Rate, Fragments

Scientific paper

The velocity distributions of H and OH fragments produced through solar photodissociation of gaseous H2O molecules under collisionless conditions are presented. The calculations are carried out using: the most recently available absolute partial cross sections for the production of H and OH through photodissociation of H2O from its absorption onset at 1860 A down to 500 A; the newly available vibrational and rotational energy distributions of both the excited and ground state OH photofragments; the calculated cross sections for the total dissociation processes; and the integrated solar flux in 10 A increments from 500 to 1860 A in the continuum regions and the specific wavelength and flux at the bright solar lines. The calculated results show that the H atoms and the OH radicals produced exhibit multiple velocity groups. Since most current cometary modeling uses a single velocity of 20 km/sec associated with the photodissociation of H2O, the present results may be useful in interpreting the many peaks observed in the velocity distributions of the H Lyman alpha and H alpha of comets.

Affiliated with

Also associated with

No associations

Rating

Velocity distributions of hydrogen atoms and hydroxyl radicals produced through solar photodissociation of water does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Velocity distributions of hydrogen atoms and hydroxyl radicals produced through solar photodissociation of water, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Velocity distributions of hydrogen atoms and hydroxyl radicals produced through solar photodissociation of water will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1372920