Dependence of the formation depth of the weak Fraunhofer lines on atomic parameters
Abstract
Using an electronic digital computer, the average depth of the formation of weak Fraunhofer lines is calculated. A dependence of these depths on the lower-level excitation potential is evident. The average optical depth of the formation of weak absorption lines is determined mainly by the excitation potential of the lower level. The larger the excitation potential, the deeper is the formation of the absorption band. The average depths depend also on such factors as the ionization potentials of the neutral atom and iron, and on the partition functions. The joint effect of these parameters can be different for lines of various atoms and ions. A graph for some atoms and ions showing the dependences of the average optical depth on the excitation potentials is included.
- Publication:
-
Soviet Astronomy
- Pub Date:
- April 1975
- Bibcode:
- 1975SvA....18..609G
- Keywords:
-
- Atomic Excitations;
- Computer Techniques;
- Fraunhofer Lines;
- Ion Emission;
- Absorption Spectra;
- Digital Computers;
- Emission Spectra;
- Ionization Potentials;
- Optical Density;
- Optical Properties;
- Photosphere;
- Solar Physics;
- Solar Physics