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Title: Spectral Characteristics of Deuterium-, Helium- and Gas-Mixture-Discharges within PF-1000 Facility

Abstract

The paper reports on spectroscopic studies of high-current plasma discharges performed at different gas fillings within the large PF-1000 facility. To study visible radiation (VR) the use was made of a MECHELLE registered 900-spectrometer equipped with the CCD readout. The observations of a PF pinch column were performed at an angle of about 65 deg. to the z-axis, and the viewing field was at a distance of 40-50 mm from the electrode ends. Optical measurements were carried out at 0.5-{mu}s exposition synchronized with a chosen period of the investigated discharge. Differences in the optical spectra, recorded at various deuterium-helium mixtures, were analyzed. Intensities of HeI lines were computed for an assumed electron temperature and compared with the experiment. Estimated plasma concentration in pure-deuterium discharges amounted to 8x1018 cm-3, while that in pure helium shots was (4-7)x1017 cm-3 only. Estimates of the electron temperature, from the ratio of intensities of the chosen spectral lines and the continuum, gave values ranging from 5 eV to 50 eV. The paper presents also some spectra from 'weak shots', which show distinct impurity lines caused by different reasons.

Authors:
 [1]; ;  [2];  [2];  [3]; ; ;  [4]
  1. Institute of Plasma Physics, NSC KIPT, 61-108 Kharkov (Ukraine)
  2. Andrzej Soltan Institute for Nuclear Studies, 05-400 Otwock-Swierk (Poland)
  3. (Poland)
  4. Institute of Plasma Physics and Laser Microfusion, 00-908 Warsaw (Poland)
Publication Date:
OSTI Identifier:
20797907
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 812; Journal Issue: 1; Conference: PLASMA 2005: International conference on research and applications of plasmas; 3. German-Polish conference on plasma diagnostics for fusion and applications; 5. French-Polish seminar on thermal plasma in space and laboratory, Opole-Turawa (Poland), 6-9 Sep 2005; Other Information: DOI: 10.1063/1.2168832; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CHARGE-COUPLED DEVICES; DEUTERIUM; ELECTRIC CURRENTS; ELECTRODES; ELECTRON TEMPERATURE; EMISSION SPECTRA; EV RANGE; HELIUM; PF-1000 DEVICE; PINCH EFFECT; PLASMA; PLASMA DIAGNOSTICS; PLASMA FOCUS; PLASMA IMPURITIES; SPECTROSCOPY; VISIBLE RADIATION

Citation Formats

Tsarenko, A., Malinowski, K., Skladnik-Sadowska, E., Sadowski, M. J., Institute of Plasma Physics and Laser Microfusion, 00-908 Warsaw, Scholz, M., Paduch, M., and Tomaszewski, K. Spectral Characteristics of Deuterium-, Helium- and Gas-Mixture-Discharges within PF-1000 Facility. United States: N. p., 2006. Web. doi:10.1063/1.2168832.
Tsarenko, A., Malinowski, K., Skladnik-Sadowska, E., Sadowski, M. J., Institute of Plasma Physics and Laser Microfusion, 00-908 Warsaw, Scholz, M., Paduch, M., & Tomaszewski, K. Spectral Characteristics of Deuterium-, Helium- and Gas-Mixture-Discharges within PF-1000 Facility. United States. doi:10.1063/1.2168832.
Tsarenko, A., Malinowski, K., Skladnik-Sadowska, E., Sadowski, M. J., Institute of Plasma Physics and Laser Microfusion, 00-908 Warsaw, Scholz, M., Paduch, M., and Tomaszewski, K. Sun . "Spectral Characteristics of Deuterium-, Helium- and Gas-Mixture-Discharges within PF-1000 Facility". United States. doi:10.1063/1.2168832.
@article{osti_20797907,
title = {Spectral Characteristics of Deuterium-, Helium- and Gas-Mixture-Discharges within PF-1000 Facility},
author = {Tsarenko, A. and Malinowski, K. and Skladnik-Sadowska, E. and Sadowski, M. J. and Institute of Plasma Physics and Laser Microfusion, 00-908 Warsaw and Scholz, M. and Paduch, M. and Tomaszewski, K.},
abstractNote = {The paper reports on spectroscopic studies of high-current plasma discharges performed at different gas fillings within the large PF-1000 facility. To study visible radiation (VR) the use was made of a MECHELLE registered 900-spectrometer equipped with the CCD readout. The observations of a PF pinch column were performed at an angle of about 65 deg. to the z-axis, and the viewing field was at a distance of 40-50 mm from the electrode ends. Optical measurements were carried out at 0.5-{mu}s exposition synchronized with a chosen period of the investigated discharge. Differences in the optical spectra, recorded at various deuterium-helium mixtures, were analyzed. Intensities of HeI lines were computed for an assumed electron temperature and compared with the experiment. Estimated plasma concentration in pure-deuterium discharges amounted to 8x1018 cm-3, while that in pure helium shots was (4-7)x1017 cm-3 only. Estimates of the electron temperature, from the ratio of intensities of the chosen spectral lines and the continuum, gave values ranging from 5 eV to 50 eV. The paper presents also some spectra from 'weak shots', which show distinct impurity lines caused by different reasons.},
doi = {10.1063/1.2168832},
journal = {AIP Conference Proceedings},
number = 1,
volume = 812,
place = {United States},
year = {Sun Jan 15 00:00:00 EST 2006},
month = {Sun Jan 15 00:00:00 EST 2006}
}