Breit-Pauli Transition Probabilities and Electron Excitation Collision Strengths for Singly Ionized Sulfur

Details Breit-Pauli Transition Probabilities and Electron Excitation Collision Strengths for Singly Ionized Sulfur Breit-Pauli Transition Probabilities and Electron Excitation Collision Strengths for Singly Ionized Sulfur

May 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010apjs..188...32t&link_type=abstract

The Astrophysical Journal Supplement, Volume 188, Issue 1, pp. 32-45 (2010).

Astronomy and Astrophysics

Astronomy

6

Atomic Data, Atomic Processes

Scientific paper

New improved calculations are reported for transition probabilities and electron impact excitation collision strengths for the astrophysically important lines in S II. The collision strengths have been calculated in the close-coupling approximation using the B-spline Breit-Pauli R-matrix method. The multiconfiguration Hartree-Fock method with term-dependent non-orthogonal orbitals is employed for an accurate representation of the target wave functions. The close-coupling expansion includes 70 bound levels of S II covering all possible terms of the ground 3s 23p 3 and singly excited 3s3p 4, 3s 23p 23d, 3s 23p 24s, and 3s 23p 24p configurations. The present calculations are more extensive than previous ones, leading to a total 2415 transitions between fine-structure levels. The effective collision strengths are obtained by averaging the electron collision strengths over a Maxwellian distribution of velocities and these are tabulated for all fine-structure transitions at electron temperatures in the range from 5000 to 100,000 K. The present results are compared with a variety of other close-coupling calculations and available experimental data. There is an overall good agreement with the recent 18-state calculations by Ramsbottom, Bell, & Stafford and with the 19-state calculations by Tayal for the most part, but some significant differences are also noted for some transitions.

Affiliated with

Also associated with

No associations

Rating

Breit-Pauli Transition Probabilities and Electron Excitation Collision Strengths for Singly Ionized Sulfur 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 Breit-Pauli Transition Probabilities and Electron Excitation Collision Strengths for Singly Ionized Sulfur, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Breit-Pauli Transition Probabilities and Electron Excitation Collision Strengths for Singly Ionized Sulfur will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1892679