Diagnostics of PF-1000 Facility Operation and Plasma Concentration on the Basis of Spectral Measurements

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

DOI:https://doi.org/10.1063/1.2168835· OSTI ID:20797910

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

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

The paper concerns the monitoring of high-current pulse discharges and the determination of the plasma concentration within the dense magnetized plasma by means of optical spectroscopy methods. In experiments with the large PF-1000 facility operated at IPPLM in Warsaw, Poland, attention was paid to the determination of the operational mode and electron concentration under different experimental conditions. To measure the visible radiation (VR) the use was made of the MECHELLE registered 900-spectrometer equipped with the CCD readout. The VR emission, observed at 65 deg. to the z-axis, originated from a part of the electrode surfaces, the collapsing current-sheath layer and the dense plasma pinch-region (40-50 mm from the electrode ends). Considerable differences were found in the optical spectra recorded for so-called 'good shots' and for cases of some failures. Estimates of the electron concentration, which were performed with different spectroscopic techniques, showed that it ranged from 5.56x1018 cm-3 to 4.8x1019 cm-3, depending on experimental conditions. The correlation of the fusion-neutron yield and the plasma density was proved.

• OSTI ID: 20797910
• 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
CORRELATIONS
ELECTRIC CURRENTS
ELECTRODES
ELECTRONS
EMISSION SPECTROSCOPY
NEUTRONS
PF-1000 DEVICE
PLASMA
PLASMA DENSITY
PLASMA DIAGNOSTICS
PLASMA FOCUS
PLASMA PRODUCTION
PULSES
VISIBLE RADIATION