Observation of anomalous Iron Ion Charge Distribution in FTU
Abstract
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.
- Authors:
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 15013625
- Report Number(s):
- UCRL-CONF-201024
TRN: US0600820
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Conference
- 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
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CHARGE DISTRIBUTION; CHARGE STATES; DIFFUSION; ELECTRON TEMPERATURE; FIRST WALL; FT TOKAMAK; IRON IONS; SPECTROSCOPY
Citation Formats
Finkenthal, M, May, M, Pacella, D, Leigheb, M, Zagorski, R, Mattioli, M, and Fournier, K. Observation of anomalous Iron Ion Charge Distribution in FTU. United States: N. p., 2003.
Web.
Finkenthal, M, May, M, Pacella, D, Leigheb, M, Zagorski, R, Mattioli, M, & Fournier, K. Observation of anomalous Iron Ion Charge Distribution in FTU. United States.
Finkenthal, M, May, M, Pacella, D, Leigheb, M, Zagorski, R, Mattioli, M, and Fournier, K. 2003.
"Observation of anomalous Iron Ion Charge Distribution in FTU". United States. https://www.osti.gov/servlets/purl/15013625.
@article{osti_15013625,
title = {Observation of anomalous Iron Ion Charge Distribution in FTU},
author = {Finkenthal, M and May, M and Pacella, D and Leigheb, M and Zagorski, R and Mattioli, M and Fournier, K},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/15013625},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Nov 14 00:00:00 EST 2003},
month = {Fri Nov 14 00:00:00 EST 2003}
}
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