Characteristics of the plasma jet by applying a pseudo-spark discharge

Takaharu Kamada (1) , Masayuki Watanabe (2) , Naofumi Matsukawa (1) , Toshiaki Ishikawa (1) , Minoru Itagaki (1) , Tamiya Fujiwara (1) , Yasunori Ohkuma (3) , Shoichi Shiina (4) , Katsunori Saito (2)

1 Iwate University
2 Nihon University
3 TUAT - Tokyo University of Agriculture and Technology
4 AIST - National Institute of Advanced Industrial Science and Technology

The PSD is a low-pressure gas discharge with an especially geometrical shape of a pair of parallel disk electrodes. In this paper, the pseudo-spark discharge (PSD) is applied to the source for a high current glow plasma jet. The mechanism of the plasma acceleration is an electromagnetic force. To accelerate the plasma, the diameter of the anode hole is enlarged as compared with that of the cathode. The electron temperature and density of the plasma jet is measured by using an electric probe technique. In this experiment of the discharge current is 10 kA in hydrogen gas, the temperature reached approximately 4eV. In addition, heat flux did not melt electrodes during a number of discharges, because PSD is glow mode. The geometrical shape of the electrodes plays an essential role in the characteristics of the PSD plasma jet. Thus, the high temperature and density plasma jet without the heat problem will become a useful tool for various technological applications.

Domaines: Physique des plasmas [physics.plasm-ph]; Autre

Takaharu Kamada, Masayuki Watanabe, Naofumi Matsukawa, Toshiaki Ishikawa, Minoru Itagaki, et al.. Characteristics of the plasma jet by applying a pseudo-spark discharge. 2004. ⟨hal-00002020v3⟩