Two-step photoionization of hydrogen atoms in interplanetary space

Details Two-step photoionization of hydrogen atoms in interplanetary space Two-step photoionization of hydrogen atoms in interplanetary space

Oct 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990p%26ss...38.1225g&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 38, Oct. 1990, p. 1225-1230.

Computer Science

6

Hydrogen Atoms, Interplanetary Space, Photoionization, Atomic Excitations, Neutral Gases, Particle Interactions, Solar Corpuscular Radiation

Scientific paper

Photoionization is one of the key processes which determine the properties of fluxes of neutral atoms in interplanetary space. A new two-step channel (called indirect) of photoionization of hydrogen atoms is proposed. Hydrogen atoms are at first excited to states with principal quantum number n greater than 2, then decay to metastable H(2S) states, where they can be photoionized. Competing processes due to the interaction with solar wind plasma and solar radiation are considered, and the photoionization rate through the proposed indirect channel is calculated. This rate depends on distance from the sun as the inverse of 1/R to the 4th at large distances (R greater than 1-2 AU) and as the inverse of 1/R-squared at close approaches, where it is higher than the rate of direct photoionization.

Affiliated with

Also associated with

No associations

Rating

Two-step photoionization of hydrogen atoms in interplanetary space 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 Two-step photoionization of hydrogen atoms in interplanetary space, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two-step photoionization of hydrogen atoms in interplanetary space will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1304955