Unified and impact treatment of partially overlapping spectral lines
Abstract
The unified theory of line broadening and its impact limits as well as an 'extended impact theory' are reinvestigated with regard to their validity for partially overlapping lines. It is shown that the extended impact theory does not lead to an improved treatment of line coupling, but that it may be used as an interpolating formalism when line coupling is negligible. As an example numerical applications to the Stark-broadened fine-structure profiles of Balmer-alpha are presented.
- Publication:
-
Journal of Physics B Atomic Molecular Physics
- Pub Date:
- November 1989
- DOI:
- Bibcode:
- 1989JPhB...22.3657S
- Keywords:
-
- Atomic Collisions;
- Balmer Series;
- Spectral Line Width;
- Stark Effect;
- Bessel Functions;
- Debye Length;
- Hamiltonian Functions;
- Hydrogen;
- Schroedinger Equation;
- Space Plasmas;
- Atomic and Molecular Physics