Radiative rates and electron impact excitation rates for transitions in Cr VIII

Details Radiative rates and electron impact excitation rates for transitions in Cr VIII Radiative rates and electron impact excitation rates for transitions in Cr VIII

Nov 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009a%26a...506.1501a&link_type=abstract

Astronomy and Astrophysics, Volume 506, Issue 3, 2009, pp.1501-1509

Astronomy and Astrophysics

Astrophysics

1

Atomic Data, Atomic Processes

Scientific paper

Aims: In this paper we report on calculations of energy levels, radiative rates, oscillator strengths, line strengths, and effective collision strengths for transitions among the lowest 362 levels of the (1s^22s^22p^6) 3s^23p^5, 3s3p^6, 3s^23p^43d, 3s3p^53d, 3s^23p^33d^2, 3s3p^43d^2, 3p^63d, and 3s^23p^44ℓ configurations of Cr viii. Methods: The general-purpose relativistic atomic structure package (grasp) and flexible atomic code (fac) are adopted for the calculations. Results: Radiative rates, oscillator strengths, and line strengths are reported for all electric dipole (E1), magnetic dipole (M1), electric quadrupole (E2), and magnetic quadrupole (M2) transitions among the 362 levels. Comparisons are made with earlier available results and the accuracy of the data is assessed. Additionally, lifetimes for all 362 levels are listed, although comparisons with other theoretical results are limited to only a few levels. Our energy levels are estimated to be accurate to better than 3% (within 0.4 Ryd), whereas results for other parameters are probably accurate to better than 20%. Finally, electron impact collision strengths and excitation rates are computed for all transitions over a wide energy (temperature) range. For these calculations, FAC is adopted and results in the form of effective collision strengths are reported over a wide temperature range of 105.0-106.6 K.
Full Tables [see full textsee full text], [see full textsee full text], and Table 6 are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/506/1501

Affiliated with

Also associated with

No associations

Rating

Radiative rates and electron impact excitation rates for transitions in Cr VIII 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 Radiative rates and electron impact excitation rates for transitions in Cr VIII, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radiative rates and electron impact excitation rates for transitions in Cr VIII will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1535162