Charge Transfer Rate in Collisions of H + Ions with Si Atoms

Details Charge Transfer Rate in Collisions of H + Ions with Si Atoms Charge Transfer Rate in Collisions of H + Ions with Si Atoms

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apj...473.1114k&link_type=abstract

Astrophysical Journal v.473, p.1114

Astronomy and Astrophysics

Astronomy

7

Atomic Data, Atomic Processes, Molecular Processes

Scientific paper

Charge transfer in Si(3P, 1D) + H+ collisions is studied theoretically by using a semiclassical molecular representation with six molecular channels for the triplet manifold and four channels for the singlet manifold at collision energies above 30 eV, and by using a fully quantum mechanical approach with two molecular channels for both triplet and singlet manifolds below 30 eV. The ab initio potential curves and nonadiabatic coupling matrix elements for the HSi+ system are obtained from multireference single- and double-excitation configuration interaction (MRD-CI) calculations employing a relatively large basis set. The present rate coefficients for charge transfer to Si+(4P) formation resulting from H+ + Si(3P) collisions are found to be large with values from 1 x 10-10 cm-3 s-1 at 1000 K to 1 x 10-8 cm-3 s-1 at 100,000 K. The rate coefficient for Si+(2P) formation, resulting from H+ + Si(3P) collisions, is found to be much smaller because of a larger energy defect from the initial state. These calculated rates are much larger than those reported by Baliunas & Butler, who estimated a value of 10-11 cm-3 s-1 in their coronal plasma study. The present result may be relevant to the description of the silicon ionization equilibrium.

Affiliated with

Also associated with

No associations

Rating

Charge Transfer Rate in Collisions of H + Ions with Si Atoms 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 Charge Transfer Rate in Collisions of H + Ions with Si Atoms, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Charge Transfer Rate in Collisions of H + Ions with Si Atoms will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-819644