scholarly journals Investigation of the Arc Characteristics of Switching DC Arcs on Hydrogen Containing Gas Mixtures

2019 ◽  
Vol 6 (1) ◽  
pp. 69-72 ◽  
Author(s):  
D. Gonzalez ◽  
S. Gortschakow ◽  
S. Yu ◽  
F. Werner
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
High Speed ◽  
Gas Mixtures ◽  
High Speed Imaging ◽  
Arc Characteristics ◽  
Pressure Discharge ◽  
Model Chamber ◽  
Imaging And Spectroscopy ◽  
Dc Current

<p>The characteristics of switching DC current arcs in  hydrogen  containing gas mixtures under pressure were investigated using a model chamber. The switching device consists of an electro-mechanic double breaker unit with copper contacts. High-speed imaging and spectroscopy were used to observe and to characterize the switching arc. The experiments indicate how the dynamic interaction of an external magnetic field with a high-pressure discharge causes an elongation and twisting of the arc-channel and consequently a voltage increase. Comparative measurements with and without external magnetic field indicate a strong influence of this factor. Cu and N lines together with strongly broadened H lines were observed.</p>

scholarly journals Effect of External Magnetic Field on Long DC Arc Characteristics with Rng-shaped Anode

2021 ◽  
Vol 333 ◽  
pp. 03004
Author(s):  
Akio Hashizawa ◽  
Manabu Tanaka ◽  
Takayuki Watanabe ◽  
Tomohiro Koga
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
High Speed ◽  
Plasma Jet ◽  
Jet Flow ◽  
Critical Issue ◽  
Fluctuation Phenomena ◽  
High Speed Camera ◽  
Electrode Gap ◽  
Dc Arc

Fluctuation phenomena of plasma jet flow in an innovative long DC arc system with a ring-shaped anode were successfully clarified by a high-speed camera visualization. The long DC arc with long electrode gap distance more than 350 mm has been applied to gas decomposition due to its advantages of long plasma length, resulting in long residence time of treated gas. However, large heat loss at a conventional hemispherical-shaped anode was a critical issue in the long DC arc system. Therefore, the ring-shaped anode was utilized to convert large energy loss at the anode into the plasma jet flow. High-speed camera observation revealed the effect of external magnetic field on the fluctuation phenomena. Plasma jet fluctuates with the frequency of several tens Hz when the magnetic field was applied. These understanding of arc and plasma jet fluctuation enables to improve the capability of long DC arc system.

AC losses in a HTS coil carrying DC current in AC external magnetic field

2003 ◽  
Vol 392-396 ◽  
pp. 1145-1149 ◽  
Author(s):  
J. Ogawa ◽  
Y. Zushi ◽  
M. Fukushima ◽  
O. Tsukamoto ◽  
E. Suzuki ◽  
...  
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Ac Losses ◽  
Dc Current

Vibration Characteristics of Magnetic Fluid Droplet Adsorbed to Magnetized Needlepoint in Alternating Magnetic Field

2012 ◽  
Vol 721 ◽  
pp. 108-113
Author(s):  
Sota Inomata ◽  
Seiichi Sudo ◽  
Hidemasa Takana ◽  
Hideya Nishiyama
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Magnetic Fluid ◽  
High Speed ◽  
Video Camera ◽  
Alternating Magnetic Field ◽  
Camera System ◽  
High Speed Video ◽  
High Speed Video Camera ◽  
Video Camera System

The dynamic behavior of a magnetic fluid droplet adsorbed to magnetized needlepoint in alternating magnetic field was studied with a high speed video camera system. The directions of alternating magnetic field were parallel and opposite to static magnetic field of magnetized needlepoint. It was found that the surface of magnetic fluid droplet responds to the external magnetic field in elongation and contraction. The frequency of magnetic fluid droplet oscillation was exactly same of the external magnetic field. The shape and instability oscillations of the magnetic fluid droplet were revealed experimentally.

The Influence of an External Magnetic Field on the Burning of a High-Speed Air-Carbon Mixture

2018 ◽  
Vol 56 (1) ◽  
pp. 20-24 ◽  
Author(s):  
A. I. Alekseev ◽  
D. N. Vaulin ◽  
A. I. Stepanov ◽  
V. A. Chernikov
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
High Speed

scholarly journals Dependency of high-speed write properties on external magnetic field in spin–orbit torque in-plane magnetoresistance devices

2021 ◽  
Vol 14 (1) ◽  
pp. 013001
Author(s):  
Yohei Shiokawa ◽  
Eiji Komura ◽  
Yugo Ishitani ◽  
Atsushi Tsumita ◽  
Keita Suda ◽  
...  
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
High Speed ◽  
Spin Orbit
Sign in / Sign up

Export Citation Format

Share Document