Magnetic Field Measurement in Beta‐Ray Spectroscopy

Measurement and simulation of magnetic field strenght in the nano magnetic abrasive finishing process

Magnetic abrasive finishing can be classified as a non-traditional super finishing method for finishing surfaces with different shapes and working materials like flat plates, shafts, bearings parts, screws, tubes and many other mechanical parts that need good surface finishing properties. MAF is effective in polishing, cleaning, deburring and burnishing metal parts. The most important parameter...

Physics Today Improvements in the precision of betaray spectroscopy

Positronium Spectroscopy in a Magnetic Field

Hyperfine spectroscopy of positronium formed in the presence of a static magnetic field is considered. Generalising the situation hitherto developed in the literature, the magnetic field is not assumed to be parallel to the momentum of incoming polarised positrons, while the possibility of electron polarisation is also included in the analysis. The results are of application to high sensitivity...

High Magnetic Field Spectroscopy in Astrophysics

The discovery of very large magnetic fields in white dwarf stars and neutron stars has stimulated interest in the spectroscopy of free atoms in high magnetic fields. We review the discovery of continuum polarization in certain white dwarf stars. We discuss the interpretation of the spectra of the magnetic white dwarfs and the confirmation of the presence of large fields. We describe recent inve...

Using Nonlinear Zeeman Spectroscopy to obtain In-Situ Magnetic Field Measurement in a Hall Thruster

We present the experimental results based on a novel non-intrusive method for obtaining the magnetic field magnitude profile in a 6-kW Hall thruster operating at the nominal condition. We used the Xe I 6s’[1/2]1 → 6p’[3/2]2 transition at 834.912 nm (vacuum) to perform laser-induced fluorescence spectroscopy inside the channel near the exit plane. Due to the Zeeman effect, the obtained spectra c...