The Hanle effect of the coronal L-alpha line of hydrogen - Theoretical investigation

Details The Hanle effect of the coronal L-alpha line of hydrogen - Theoretical investigation The Hanle effect of the coronal L-alpha line of hydrogen - Theoretical investigation

May 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982soph...78..157b&link_type=abstract

Solar Physics, vol. 78, May 1982, p. 157-178.

Physics

41

Hydrogen, Linear Polarization, Lyman Spectra, Quantum Mechanics, Solar Corona, Solar Magnetic Field, Solar Spectra, Chromosphere, Electromagnetic Interactions, Hyperfine Structure, Magnetic Effects

Scientific paper

This paper is devoted to a computation of the effect of a magnetic field on the linear polarization of the coronal Lα line of hydrogen. Recent works (Gabriel et al., 1971) have shown that the linear polarization of this line is due to resonant scattering of the incident chromospheric Lα line. The Hanle effect is the modification of this linear polarization, due to the magnetic field. After having briefly recalled the main features of this effect and the conditions of the coronal Lα line formation, we present the theoretical formalism to be used for Hanle effect computations. The effect of the hyperfine structure of the line is included. Then the results of our computations are given in terms of linear polarization as a function of the magnetic field. We get that the effect of the hyperfine structure on these results is negligible, although this is not evident a priori. When the hyperfine structure is neglected, the line structure is simplified and the Hanle effect can be expressed with analytical formulae, which we give in the last part of this paper. After integration along the line of sight, these formulae could be used for magnetic field determination in the solar corona from measurements of the linear polarization of the Lα line.

Affiliated with

Also associated with

No associations

Rating

The Hanle effect of the coronal L-alpha line of hydrogen - Theoretical investigation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Hanle effect of the coronal L-alpha line of hydrogen - Theoretical investigation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Hanle effect of the coronal L-alpha line of hydrogen - Theoretical investigation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1101988