Generation and propagation characteristics of vacuum pulse discharge metal plasma

Wenzheng, 刘文正 Liu; Fei, 孔飞 Kong; Dejin, 张德金 Zhang

doi:10.3788/hplpb20122402.0491

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The 220 V AC voltages were boosted by a step-up transformer, and the C2 capacitor was charged by a voltage-doubling rectifier circuit. When an ignition pulse was applied to the three-point gap, the gap would be a breakover, leading to the occurrence of discharge between the cathode and the anode [7,8] . The voltage and discharge current waveforms were measured by two high-voltage probes, settled at both ends of the electrodes, and the circuit is shown in Fig.…”

Section: Discharge Circuitmentioning

confidence: 99%

See 1 more Smart Citation

Study on the Discharge Characteristics of a Coaxial Pulsed Plasma Thruster

Liu¹,

Wang²,

Zhang³

et al. 2014

Plasma Sci. Technol.

View full text Add to dashboard Cite

A new coaxial pulsed plasma thruster (PPT) laboratory model is designed and employed in this study. A Teflon sleeve is connected with the anode, which is shaped as a nozzle, and a cathode is mounted in the cavity of the Teflon sleeve and kept in close contact with it. A thread is then designed in the internal surface of the Teflon sleeve, and because of the strong field strength of the cathode triple junction (CTJ), vacuum flashover occurs and a plasma jet is acquired behind the anode. The electric field distribution of the designed coaxial PPT laboratory model is simulated by MAXWELL 3D simulation software, and the plasma density and thrust are measured by a Langmuir probe and a piezoelectric thin-film sensor, respectively. Through a series of comparative experiments, we discuss the impact of optimal designs, such as the thread and the nozzle-shaped anode, on the discharge characteristics of the coaxial PPT. The experimental and simulation results indicate that the designed coaxial PPT laboratory model presents better discharge characteristics in view of its higher plasma density and greater thrust.

show abstract

Section: Discharge Circuitmentioning

confidence: 99%

Section: Discharge Circuitmentioning

confidence: 99%

Study on the Discharge Characteristics of a Coaxial Pulsed Plasma Thruster

Liu¹,

Wang²,

Zhang³

et al. 2014

Plasma Sci. Technol.

View full text Add to dashboard Cite

show abstract

Impact of the Insulator on the Electric Field and Generation Characteristics of Vacuum Arc Metal Plasmas

Liu¹,

Wang²,

Dou³

2014

Plasma Sci. Technol.

View full text Add to dashboard Cite

The field electron emission plays a vital role in the process of vacuum discharge breakdown. The electric field strength at the cathode tip is significant to the generation characteristics of vacuum arc metal plasmas. To increase the field strength at the cathode tip, a coaxial electrode plasma source was employed with an insulator settled between the electrodes. The math expression of the field strength is derived based on the Gauss theory. The impact of the insulator on the electric field and parameters of plasmas were investigated by MAXWELL 3D R simulation software and the Langmuir probe. In addition, a composite insulator was adopted to further strengthen the field strength. A series of experiments were performed to focus on the role of the composite insulator in detail. The experimental and simulation results indicate that, a reasonable layout of the insulator, especially the composite insulator, can effectively increase the field strength at the cathode tip and the plasma density.

show abstract

Generation and propagation characteristics of vacuum pulse discharge metal plasma

Cited by 2 publications

References 0 publications

Study on the Discharge Characteristics of a Coaxial Pulsed Plasma Thruster

Study on the Discharge Characteristics of a Coaxial Pulsed Plasma Thruster

Impact of the Insulator on the Electric Field and Generation Characteristics of Vacuum Arc Metal Plasmas

Contact Info

Product

Resources

About