Spectroscopic diagnostics of high temperature plasmas
Abstract
A research program in soft x ray/ultraviolet/visible diagnostics for magnetic fusion is described. Recent results include the electron temperature, electron density and impurity densities during EML activity on the TEXT tokamak. The Zeeman effect induced circular polarization in Li neutral beam emissions was analyzed to determine the safety factor in sawtoothing and ECRH heated discharge. The reflective properties of multilayer mirrors (10 to 200 A) were measured. Future work includes an order of magnitude improvement in the time resolution of the circular-polarimeter, development of a soft x ray normal incidence spectrometer and a feasibility study for a narrow band x ray photometer.
- Publication:
-
Unknown
- Pub Date:
- 1989
- Bibcode:
- 1989sdht.rept.....M
- Keywords:
-
- Electron Cyclotron Heating;
- High Temperature Plasmas;
- Magnetic Mirrors;
- Magnetic Spectroscopy;
- Mirror Fusion;
- Plasma Diagnostics;
- Spectrum Analysis;
- Electron Density (Concentration);
- Electron Energy;
- Impurities;
- Reflectance;
- Zeeman Effect;
- Plasma Physics