Measurement of the Magnetic Field in a Plasma Using an Impurity Probe Spectroscopy
- 1 October 1981
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 20 (10) , L713
- https://doi.org/10.1143/jjap.20.l713
Abstract
The magnetic field strength has been obtained from the Zeeman splitting. Thermal He atoms, as an impurity, were injected into a low density (n e∼5×1010 cm-3) hydrogen plasma produced by electron cyclotron resonance. A singlet line at 6678 Å from He atoms excited by the plasma electrons splits into a normal Zeeman triplet in the magnetic field. The line profile was measured with a high resolution Fabry-Perot interferometer. This diagnostic allows the determination of the Zeeman splitting at magnetic fields as low as 1.2 kG, lower than which the splitting is masked by the Doppler broadening of the injected atoms.Keywords
This publication has 5 references indexed in Scilit:
- The Hydrogen Balmer- α Line Profile in RF-Discharge PlasmasJapanese Journal of Applied Physics, 1981
- Optical Diagnostics Using a Barium Ion Beam for Spatial Resolution of Plasma ParametersIEEE Transactions on Plasma Science, 1979
- Plasma diagnostics by neutral beam probingPlasma Physics, 1978
- Determination of the-Repulsive Potential up to 0.14 eV by Inversion of High-Resolution Total—Cross-Section MeasurementsPhysical Review Letters, 1973
- Der Wirkungsquerschnitt von Gasmolekülen gegenüber Alkaliionen von 1 ‐ 30 Volt GeschwindigkeitAnnalen der Physik, 1928