Electron concentrations in pulsed-discharge plasmas in hydrogen and nitrogen

1976 ◽  
Vol 19 (10) ◽  
pp. 1376-1378
Author(s):  
V. V. Pozdeev ◽  
S. S. Smolyakov ◽  
V. S. Mel'chenko ◽  
V. N. Gryaznov
Keyword(s):  
Pulsed Discharge ◽  
Discharge Plasmas

Pulsed Discharge Plasmas in Supercritical Carbon Dioxide

2005 ◽  
Author(s):  
T. Kiyan ◽  
A. Uemura ◽  
K. Tanaka ◽  
C. Zhang ◽  
T. Namihira ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Pulsed Discharge ◽  
Discharge Plasmas ◽  
Supercritical Carbon

Enhancement of yeast proliferation using atmospheric pressure pulsed discharge plasmas

2011 ◽  
Author(s):  
S. Takeuchi ◽  
D. Obata ◽  
T. Yamamoto ◽  
T. Sakugawa ◽  
S. Katsuki ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Pulsed Discharge ◽  
Discharge Plasmas

Recent Progress of Nano-Seconds Pulsed Discharge and its Applications

2011 ◽  
Vol 14 (1) ◽  
Author(s):  
Douyan Wang ◽  
Takao Namihira ◽  
Hidenori Akiyama
Keyword(s):  
Applied Voltage ◽  
Propagation Velocity ◽  
Arc Discharge ◽  
Pulsed Power ◽  
Pulsed Discharge ◽  
Time Duration ◽  
Power Generator ◽  
Discharge Plasmas ◽  
Significant Difference ◽  
Pulsed Power Generator

AbstractNon-thermal plasma has been widely used for various applications. The observation of discharge plasmas is an essential aspect for understanding the plasma physics of this growing field. Generally, a pulsed discharge having time duration of 100s nanoseconds consists of streamer head propagation, glow-like discharge and arc discharge phases. It is well known that the propagation phenomenon of the streamer head between electrodes is strongly influenced by the polarity of the applied voltage. Typically, both of the positive and negative streamer heads propagate with the acceleration, and the propagation velocity of the positive streamer head is faster than that of the negative one. In the present study, a nano-seconds pulsed power generator which can generate a pulsed voltage with 5 ns of duration and 2.5 ns of rise and fall times was developed, and the propagation of the positive and negative streamer heads were observed using this generator. The results show that the discharge phenomena are totally different from the general pulsed discharge. The average propagation velocity of the nano-seconds streamer heads was 6.1 mm/ns for 67 kV applied voltage, which is five times faster than that of the general one (100 ns of pulse duration). Furthermore, no significant difference of the propagation velocities was observed between the positive and negative applied voltages. The reason for the faster propagation velocity resulted in the nano-seconds pulsed discharge is the faster voltage rise time in comparison with the general pulsed discharge. Furthermore, the application using nano-seconds pulsed discharge for ozone generation showed highest energy efficiency than other discharge methods.

Oxidation of Simulated Soil Contaminated with Bacteria using Pulsed Discharge

2019 ◽  
Vol 139 (10) ◽  
pp. 433-434
Author(s):  
Takeru Konishi ◽  
Akira Harimaya ◽  
Katsuyuki Takahashi ◽  
Koichi Takaki ◽  
Kohei Obase
Keyword(s):  
Pulsed Discharge
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