Magnetic-field measurement based on Zeeman effect in lines excited by charge exchange recombination
- 1 August 1986
- journal article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 57 (8) , 2029-2031
- https://doi.org/10.1063/1.1138780
Abstract
It is suggested that the poloidal magnetic field in a tokamak may be deduced from the analysis of circular polarization of light impurity ion lines excited by charge-exchange recombination. Visible or near-ultraviolet transitions in hydrogenlike oxygen and carbon are considered. Estimations of the linewidths and the magnitude of the Zeeman effect show that, with appropriate polarization analyzer and the experiment geometry, the poloidal component of the magnetic field can, in principle, be measured. Uncertainties of the model used to calculate the polarized line profiles do not affect the interpretation of the measurement in a fundamental way and may be accounted for experimentally by calibrating the polarization effect against the components of the toroidal field. In principle, the analysis of only one transition may provide information about the whole poloidal field profile.Keywords
This publication has 8 references indexed in Scilit:
- Zeeman effect polarimetry of Ti XVII 3834 Å line in the Texas Experimental TokamakApplied Physics Letters, 1986
- Magnetic field measurements in tokamak plasmasJournal of Applied Physics, 1984
- Observation of lines above 2000 Å in O VIII and C VI in the Princeton Large Torus due to charge-exchange processes: Diagnostic applicationsApplied Physics Letters, 1984
- Determination of plasma-ion velocity distribution via charge-exchange recombination spectroscopyPhysical Review A, 1984
- Measurements of plasma ion temperature and rotation velocity using the He II 4686-Å line produced by charge transferApplied Physics Letters, 1983
- Plasma rotation measurements using spectral lines from charge-transfer reactionsApplied Physics Letters, 1983
- Plasma ion temperature measurements via charge exchange recombination radiationApplied Physics Letters, 1983
- Magnetic field measurements in fusion plasmas using the motional Stark effectPhysics Letters A, 1982