Electron Collisional Broadening of Isolated Lines from Multiply-Ionized Atoms

Physics – Atomic Physics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

13 pages, PostScript only. To appear in JQSRT

Scientific paper

10.1016/S0022-4073(99)00074-6

Recent experimental and theoretical (both improved semiclassical and fully quantum-mechanical) results for B III and Ne VII delta n = 0 transitions with n = 2 or 3, respectively, are discussed. The probable reasons for disagreements by about a factor of 2 between the fully quantum-mechanically calculated and both measured and semiclassically calculated widths can be explained in terms of violation of validity criteria and non-thermal Doppler effects. More independent determinations of line widths for multiply-ionized non-hydrogenic ions are called for, but meanwhile caution should be exercised in the use of corresponding semiclassically calculated widths, e.g., in opacity calculations or for plasma density diagnostics. Only the quantum calculations allow a clear separation of elastic and inelastic scattering contributions to the width. For B III, elastic scattering contributes about 30% whereas for Ne VII inelastic scattering dominates. This allows rather direct comparisons with benchmark electron-ion scattering experiments.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Electron Collisional Broadening of Isolated Lines from Multiply-Ionized 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 Electron Collisional Broadening of Isolated Lines from Multiply-Ionized Atoms, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electron Collisional Broadening of Isolated Lines from Multiply-Ionized Atoms will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-29010

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.