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

Journal Article · Sun Jan 15 04:00:00 EST 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2168832· OSTI ID:20797907

Tsarenko, A ^[1]; Malinowski, K; Skladnik-Sadowska, E ^[2]; Sadowski, M J ^[2]; Scholz, M; Paduch, M; Tomaszewski, K ^[3]

---

1. Institute of Plasma Physics, NSC KIPT, 61-108 Kharkov (Ukraine)
2. Andrzej Soltan Institute for Nuclear Studies, 05-400 Otwock-Swierk (Poland)
3. Institute of Plasma Physics and Laser Microfusion, 00-908 Warsaw (Poland)

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.

• OSTI ID: 20797907
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 812; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

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