- Tytuł:
- Comparison of optical spectra recorded during DPF-1000U plasma experiments with gas-puffing
- Autorzy:
-
Zaloga, D. R.
Skladnik-Sadowska, E.
Kubkowska, M.
Ladygina, M. S.
Malinowski, K.
Kwiatkowski, R.
Sadowski, M. J.
Paduch, M.
Zielinska, E.
Makhlaj, V. A. - Powiązania:
- https://bibliotekanauki.pl/articles/147780.pdf
- Data publikacji:
- 2015
- Wydawca:
- Instytut Chemii i Techniki Jądrowej
- Tematy:
-
electron density
gas-puff
optical spectrum
plasma focus
plasma stream - Opis:
- The results are presented of the optical spectra measurements for free plasma streams generated with the use of the modifi ed DPF-1000U machine. This facility was recently equipped with a gas injection system (the so-called gas-puff) placed on the symmetry axis behind the central opening in the inner electrode. The DPF-1000U experimental chamber was fi lled up with pure deuterium at the initial pressure of 1.6 or 2.4 mbar. Additionally, when the use was made of the gas-puff system about 1 cm3 of pure deuterium was injected at the pressure of 2 bars. The gas injection was initiated 1.5 or 2 ms before the triggering of the main discharge. The investigated plasma discharges were powered from a condenser bank charged initially to 23 kV (corresponding to the energy of 352 kJ), and the maximum discharge current amounted to about 1.8 MA. In order to investigate properties of a dense plasma column formed during DPF-1000U discharges the use was made of the optical emission spectroscopy. The optical spectra were recorded along the line of sight perpendicular to the vacuum chamber, using a Mechelle®900 spectrometer. The recent analysis of all the recorded spectra made it possible to compare the temporal changes in the electron density of a freely propagating plasma stream for discharges without and with the gas-puffing. Using this data an appropriate mode of operation of the DPF-1000U facility could be determined.
- Źródło:
-
Nukleonika; 2015, 60, 2; 309-314
0029-5922
1508-5791 - Pojawia się w:
- Nukleonika
- Dostawca treści:
- Biblioteka Nauki
Artykuł