The Hanle effect applied to magnetic field diagnostics

1981 ◽  
Vol 29 (4) ◽  
Author(s):  
SylvieSahal Br�chot
Keyword(s):  
Magnetic Field ◽  
Hanle Effect

The hanle effect in a turbulent magnetic field

2009 ◽  
Vol 53 (2) ◽  
pp. 153-159 ◽  
Author(s):  
D. N. Rachkovskii
Keyword(s):  
Magnetic Field ◽  
Hanle Effect

scholarly journals 24 synoptic maps 1974-1982 (ascending phase of cycle XXI) of 323 prominence average magnetic fields measured by the Hanle effect

2013 ◽  
Vol 8 (S300) ◽  
pp. 397-400
Author(s):  
Véronique Bommier
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Differential Rotation ◽  
Small Angle ◽  
Large Scale ◽  
Second Generation ◽  
Large Scale Structure ◽  
Field Vector ◽  
Scale Structure ◽  
Hanle Effect

AbstractThe poster was made of 323 average prominence magnetic fields reported on 24 synoptic maps. The paper first resumes the methods for the field derivation, and the different results of the whole program of these second generation Hanle effect observations. From their conclusions, it was possible to derive a unique field vector for each of the 323 prominences. The maps put in evidence a large scale structure of the prominence magnetic field, probably distorted by the differential rotation, which leads to a systematically small angle (on the order of 30°) between the field vector and the prominence long axis.

Orientation of Prominence Microstructure Relative to the Direction of the Magnetic Field

1979 ◽  
Vol 44 ◽  
pp. 97-101
Author(s):  
O. Engvold ◽  
J.L. Leroy
Keyword(s):  
Magnetic Field ◽  
The Other ◽  
Optical Observations ◽  
High Quality ◽  
Hanle Effect ◽  
Other Hand ◽  
Solar Prominences ◽  
The Magnetic Field ◽  
Good Agreement ◽  
Field Strengths

Recent measurements of the polarization of the Hel D3 line (λ5876Å) in solar prominences (Hanle effect) have been used to infer new data about prominence magnetic field (Leroy 1977, Leroy et al. 1977, Sahal-Brèchot et al. 1977). The derived field strengths are in good agreement with previous magnetographic measurements obtained at several observatories in USA (Rust 1972). Using the Hanle effect also gives the direction of the magnetic field, which is a crusial parameter in theories of prominences (Kippenhahn and Schlüter 1957, Anzer 1968, Malville 1976). Some theories require a horizontal oriented magnetic field in the prominences. High quality optical observations, on the other hand, resolve predominantly vertically oriented prominence microstructure (Dunn 1972, Engvold 1976).

Predictions on the application of the Hanle effect to map the surface magnetic field of Jupiter

Icarus ◽  
2005 ◽  
Vol 178 (2) ◽  
pp. 297-311 ◽  
Author(s):  
L. Ben-Jaffel ◽  
W. Harris ◽  
V. Bommier ◽  
F. Roesler ◽  
G.E. Ballester ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Surface Magnetic Field ◽  
Hanle Effect

Spin Polarization of Electrons Injected from Fe into GaAs Quantum Well Characterized using Oblique Hanle Effect

2009 ◽  
Vol 1183 ◽  
Author(s):  
Eiji Wada ◽  
Mitsuru Itoh ◽  
Tomoyasu Taniyama ◽  
Masahito Yamaguchi
Keyword(s):  
Magnetic Field ◽  
Quantum Well ◽  
Spin Polarization ◽  
Spin Injection ◽  
Electron Hole ◽  
Hanle Effect ◽  
Spin Depolarization ◽  
Polarization Of Light ◽  
Low Magnetic Field ◽  
Hole Recombination

AbstractWe study spin injection from an in-plane magnetized Fe thin layer into a GaAs/AlGaAs quantum well (QW) in low magnetic fields of ±0.37 T using oblique Hanle effect. An oblique low magnetic field induces the precession of electron spins in the GaAs QW, allowing us to detect the spin polarization of electrons injected across the Fe/AlGaAs interface. Our analysis of the circular polarization of light emitted in the electron-hole recombination process in the QW gives an estimate of the lower bounds of the spin polarization to be 4.0%. Also, a spin lifetime of 140 psec is obtained in this analysis, indicating that spin depolarization at the Fe/AlGaAs interface is more predominant rather than spin relaxation in the QW region.

Magnetic field dependence of non-local lateral spin-valve signals beyond the Hanle effect

2013 ◽  
Vol 25 (21) ◽  
pp. 216007
Author(s):  
Karel Výborný ◽  
Goran Mihajlović ◽  
Axel Hoffmann ◽  
Sigurdur I Erlingsson
Keyword(s):  
Magnetic Field ◽  
Field Dependence ◽  
Magnetic Field Dependence ◽  
Spin Valve ◽  
Hanle Effect ◽  
Non Local

How to infer the Sun's global magnetic field using the Hanle effect

2016 ◽  
Vol 465 (4) ◽  
pp. 4414-4422
Author(s):  
T. Vieu ◽  
M. J. Martínez González ◽  
A. Pastor Yabar ◽  
A. Asensio Ramos
Keyword(s):  
Magnetic Field ◽  
Hanle Effect ◽  
Global Magnetic Field
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