Effect of the gap on discharge characteristics of the three-electrode trigatron switch

Zhu, Houbin; Huang, Lu; Cheng, Zhengxing; Yin, Jiang; Tang, Haohan

doi:10.1063/1.3131692

Cited by 16 publications

(4 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is seen that a Raether threshold voltage is near U m =U b ¼ 50%, which is in accordance with the published results. 8,9 The proposed model represents that k, A, B determine the threshold voltage. The greater k, i.e., the greater nonuniform E-field near the trigger pin tip, may result in the smaller threshold voltage.…”

Section: Comparison and Discussionmentioning

confidence: 99%

“…[1][2][3][9][10][11] When the volts are applied, initiated electrons emit from the cathode. These electrons are accelerated and move to the anode or trigger pin caused by the E-field, which in turn leads to electron collisions and avalanches.…”

Section: Theoretical Analysismentioning

confidence: 99%

“…Accordingly, the moving positive ions would be accelerated. Equation (9) should be revised to v i1 ¼ e 1 Â v e0 Â 10 À3 ; e 1 > 1 (10) in which e 1 denotes an ion accelerating coefficient. The second ionization coefficient c obeys the following formula: 15…”

Section: Theoretical Analysismentioning

confidence: 99%

See 2 more Smart Citations

Modeling of switching delay in gas-insulated trigatron spark gaps

et al. 2012

Journal of Applied Physics

View full text Add to dashboard Cite

Articles you may be interested inSlightly uneven electric field trigatron employed in tens of microseconds charging time Rev. Sci. Instrum. 85, 093507 (2014); 10.1063/1.4895831 Energy loss in spark gap switches Phys. Plasmas 21, 043513 (2014); 10.1063/1.4873706Effect of the gap on discharge characteristics of the three-electrode trigatron switch A simple ultraviolet radiation-triggered switch with an electric field distortion gap for long-lifetime electrodes Rev.Based on the gas discharge theory involving distorted E-field enhancement, a physical model is proposed to estimate the switching delay for gas-insulated trigatron spark gaps with a trigger pin inside the main electrode. Two discovered breakdown modes, i.e., fast-breakdown mode (FBM) and slow-breakdown mode (SBM), can be unified in this model. Raether criterion can distinguish these two modes. If the main E-field and enhanced E-field near the trigger pin tip are great enough, FBM forms easily. Otherwise, if streamer development needs to rely on the second ionization process and relevant distorted E-field enhancement, the breakdown of the main gap would turn into SBM. The enhanced E-field near the trigger pin tip may affect the threshold main E-field of FBM. The distorted E-field enhancement may affect the switching delay length of SBM. V C 2012 American Institute of Physics. [http://dx.

show abstract

Section: Comparison and Discussionmentioning

confidence: 99%

Section: Theoretical Analysismentioning

confidence: 99%

See 1 more Smart Citation

Modeling of switching delay in gas-insulated trigatron spark gaps

et al. 2012

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

“…where A=12.4 and B=342 for nitrogen [18,19]. The development velocity (v a ) [22], diffusion coefficient (D e ) and head radius of the electron avalanche (r a ) [23] can be represented in equations ( 4)-( 6). 25 During the streamer stage, the development length (S s ) is shown in equation (12).…”

Section: Discussionmentioning

confidence: 99%

Analysis on discharge process of a plasma-jet triggered gas spark switch

Tie¹,

Meng²,

Zhang³

et al. 2017

Plasma Sci. Technol.

View full text Add to dashboard Cite

The plasma-jet triggered gas switch (PJTGS) could operate at a low working coefficient with a low jitter. We observed and analyzed the discharge process of the PJTGS at the lowest working coefficient of 47% with the trigger voltage of 40 kV and the pulse energy of 2 J to evaluate the effect of the plasma jet. The temporal and spatial evolution and the optical emission spectrum of the plasma jet were captured. And the spraying delay time and outlet velocity under different gas pressures were investigated. In addition, the particle in cell with Monte Carlo collision was employed to obtain the particle distribution of the plasma jet varying with time. The results show that, the plasma jet generated by spark discharge is sprayed into a spark gap within tens of nanoseconds, and its outlet velocity could reach 10 4 m s −1 . The plasma jet plays a non-penetrating inducing role in the triggered discharge process of the PJTGS. On the one hand, the plasma jet provides the initial electrons needed by the discharge; on the other hand, a large number of electrons focusing on the head of the plasma jet distort the electric field between the head of the plasma jet and the opposite electrode. Therefore, a fast discharge originated from the plasma jet is induced and quickly bridges two electrodes.

show abstract

Closing Switches

2017

Foundations of Pulsed Power Technology

View full text Add to dashboard Cite

Effect of the gap on discharge characteristics of the three-electrode trigatron switch

Cited by 16 publications

References 14 publications

Modeling of switching delay in gas-insulated trigatron spark gaps

Modeling of switching delay in gas-insulated trigatron spark gaps

Analysis on discharge process of a plasma-jet triggered gas spark switch

Closing Switches

Contact Info

Product

Resources

About