๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Non-LTE line formation in a magnetic field

โœ Scribed by H. Domke; J. Staude

Publisher
Springer
Year
1973
Tongue
English
Weight
451 KB
Volume
31
Category
Article
ISSN
0038-0938

No coin nor oath required. For personal study only.

โœฆ Synopsis

The formation of a Zeeman-multiplet by noncoherent scattering and true absorption in a Milne-Eddington atmosphere is considered assuming a homogeneous magnetic field and complete depolarization of the atomic line levels. The transfer equation for the Stokes parameters is transformed into a scalar integral equation of the Wiener-Hopf type which is solved by Sobolev's method in closed form. The influence of the magnetic field on the mean scattering number in an infinite medium is discussed.

The solution of the hne formation problem is obtained for a Planckian source function of the form

This solution may be simplified by making the 'finite field approximation', which should be sufficiently accurate for practical purposes.

๐Ÿ“œ SIMILAR VOLUMES

Non-LTE line formation in a magnetic fie
Non-LTE line formation in a magnetic field
โœ H. Domke; J. Staude ๐Ÿ“‚ Article ๐Ÿ“… 1973 ๐Ÿ› Springer ๐ŸŒ English โš– 369 KB

Theoretical line contours calculated for fixed values of the line constants and a given model atmosphere show an increase of the Stokes parameters Q, U, and V but a decrease of I if the portion of non-coherent scattering increases. These effects increase from the centre of the solar disk to the limb

Quantum theory of line formation in a ma
Quantum theory of line formation in a magnetic field
โœ Egidio Landi Degl'innocenti; Maurizio Landi Degl'innocenti ๐Ÿ“‚ Article ๐Ÿ“… 1972 ๐Ÿ› Springer ๐ŸŒ English โš– 489 KB

The transfer equations for the Stokes parameters in the presence of magnetic field and under the hypothesis of LTE are derived in an original way by the use of density matrix techniques. The results are substantially the same as those previously obtained by other authors. We finally compare our res