A&A Supplement series, Vol. 122, April I 1997, 149-155

Received March 5; accepted June 26, 1996

Theoretical polarization profiles of optically-thick hydrogen lines from slabs in the presence of electric and magnetic fields

R. Casini and E. Landi Degl'Innocenti

Dipartimento di Astronomia e Scienza dello Spazio, Università di Firenze, L.go E. Fermi 5, I-50125 Firenze, Italy

Abstract:

The theory of formation of hydrogen lines in the presence of stationary electric and magnetic fields is applied to the calculation of the emerging Stokes profiles from a slab of hydrogen plasma, for different optical thicknesses of the slab. The calculations are performed assuming different analytical dependences of the source function on the optical depth. Typical results for hydrogen lines of interest in solar plasmas investigation are then shown.

keywords: magnetic fields -- polarization -- radiative transfer -- line: profiles -- atomic processes

 
• 1. Introduction
• 2. Formal solution of the vector radiative-transfer equation
• 3. The diagonalization approach
• 4. Conclusions
• References