Proton collisional excitation in the lowest lying 3P terms of ions in the Be and MG isoelectronic sequences

Details Proton collisional excitation in the lowest lying 3P terms of ions in the Be and MG isoelectronic sequences Proton collisional excitation in the lowest lying 3P terms of ions in the Be and MG isoelectronic sequences

Sep 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...232..636l&link_type=abstract

Astrophysical Journal, Part 1, vol. 232, Sept. 1, 1979, p. 636-648.

Astronomy and Astrophysics

Astrophysics

10

Atomic Excitations, Ionic Collisions, Isoelectronic Sequence, Proton Impact, Alpha Particles, Beryllium, Magnesium, Scattering Cross Sections, Transition Probabilities

Scientific paper

Proton collisional excitation cross sections and rate constants are presented for transitions between the 3P(J) fine-structure levels of the lowest-lying sp configurations in a number of astrophysically important ions belonging to the Be and Mg isoelectronic sequences. The calculations were made by direct integration of the Schroedinger equation resulting from semiclassical Coulomb excitation theory. The cross sections and rate constants for the 3P(J) transitions in the lowest-lying P(2) configurations are expected to be similar to those for the corresponding sp configuration transitions, and this is illustrated for C III. For the high-temperature ion Ca XVII alpha particle excitation is shown to be unimportant for situations involving ordinary values of the He/H abundance ratio. A simple, but apparently accurate method for determining certain radial integrals for low-lying excited configurations is proposed.

Affiliated with

Also associated with

No associations

Rating

Proton collisional excitation in the lowest lying 3P terms of ions in the Be and MG isoelectronic sequences 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 Proton collisional excitation in the lowest lying 3P terms of ions in the Be and MG isoelectronic sequences, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Proton collisional excitation in the lowest lying 3P terms of ions in the Be and MG isoelectronic sequences will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1817807