Atomic data from the iron project. LV. Electron impact excitation of Ni II.

Details Atomic data from the iron project. LV. Electron impact excitation of Ni II. Atomic data from the iron project. LV. Electron impact excitation of Ni II.

Jun 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004a%26a...420..763b&link_type=abstract

Astronomy and Astrophysics, v.420, p.763-768 (2004)

Astronomy and Astrophysics

Astrophysics

14

Atomic Data, Line: Formation, Ism: Abundances, Atomic Processes, Ism: Hii Regions

Scientific paper

We study the effects of using a \bar{4d} pseudo-orbital on the collision strengths for electron impact excitations of forbidden transitions in NiII computed in the close coupling approximation. It is found that the resonance structures of the collision strengths are quite sensitive to the way the pseudo-orbital is created. Further, the close coupling expansion with a single \bar4d orbital does not converge, resulting in a poor representation of (N+1)-electrons auto-ionizing states. Much greater expansions are needed to properly represent resonance structures in electron impact excitation calculations, resulting in variations of up to factors of two, with respect to previous computations, in the Maxwellian averaged excitation rate coefficients.
Tables \ref{t1} and \ref{t2} are also 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/420/763

Affiliated with

Also associated with

No associations

Rating

Atomic data from the iron project. LV. Electron impact excitation of Ni II. 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 Atomic data from the iron project. LV. Electron impact excitation of Ni II., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Atomic data from the iron project. LV. Electron impact excitation of Ni II. will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-889600