Formation of hydrogen lines under the influence of turbulent electric fields in solar flares.
Abstract
A new method of detecting low-frequency ion-sound turbulence in solar chromospheric flares is proposed. The method is based on analysis of the hydrogen Paschen γ line profiles, which exhibit - under the appropriate conditions - diagnostically important humps in the line wings around Δλ ≅ 1 Å. The author discusses the problem of Paschen γ line formation under the influence of low-frequency turbulent electric fields and compares his theoretical results with recent spectral observations. From comparison with the observed profile, the author derives a turbulent electric field mean intensity of F0 ≅ 3 CGS.
- Publication:
-
Journal of Quantitative Spectroscopy and Radiative Transfer
- Pub Date:
- July 1990
- DOI:
- 10.1016/0022-4073(90)90100-K
- Bibcode:
- 1990JQSRT..44..185H
- Keywords:
-
- Absorption Spectra;
- Electric Fields;
- H Lines;
- Ion Acoustic Waves;
- Solar Flares;
- Spectral Line Width;
- Absorptivity;
- Balmer Series;
- Doppler Effect;
- Plasma Turbulence;
- Solar Physics;
- Solar Flares: Turbulence;
- Solar Flares: Line Formation