Observation of anomalous Iron Ion Charge Distribution in FTU
Conference
·
OSTI ID:15013625
Iron coming from the poloidal limiter or the stainless steel vessel is an important intrinsic impurity in the FTU tokamak discharges, and X-ray and VUV spectroscopy provide useful information about the impurity behavior. The iron ion charge state distribution, as usual for tokamaks, is analyzed assuming a collisional radiative model and an anomalous perpendicular diffusion. In our experiment the iron ionization level depends, as it is expected, on central electron temperature (fig. 1), but the ion charge state distribution shows a different behavior when the first wall material or the iron source are changed.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 15013625
- Report Number(s):
- UCRL-CONF-201024; TRN: US0600820
- Resource Relation:
- Conference: Presented at: 29th EPS Conference on Plasma Phys. and Contr. Fusion, Montreux, Switzerland, Jun 17 - Jun 12, 2002
- Country of Publication:
- United States
- Language:
- English
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