Skip to main content

News about Scitation

In December 2016 Scitation will launch with a new design, enhanced navigation and a much improved user experience.

To ensure a smooth transition, from today, we are temporarily stopping new account registration and single article purchases. If you already have an account you can continue to use the site as normal.

For help or more information please visit our FAQs.

banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.
R. V. Latham, High Voltage Vacuum Insulation: A New Perspective (Indiana: Bloomington, 2006), pp. 3141.
R I. Boxman, “Triggered mechanisms in triggered vacuum gaps,” IEEE Transactions on Electron Devices 24(2), 122128 (1997).
J. Benford and G. Benford, “Survey of pulse shortening in high-power microwave sources,” IEEE Transactions on Plasma Science 25(2), 311317 (1997).
R. P. Little and W. T. Whitney, “Electron emission preceding electrical breakdown in vacuum,” Journal of Applied Physics 34(8), 24302432 (1963).
R. G. Forbes, C. J. Edgcombe, and U. Valdre, “Some comments on models for field enhancement,” Ultramicroscopy 95, 5765 (2003).
R. L. Miller, “Investigations of geometric field enhancement and electron emission using conformal mapping,” Doctor’s dissertation, University of Wisconsin-Madison, 2009.
S. Sato and K. Koyama, “Relationship between electrode surface roughness and impulse breakdown voltage in vacuum gap of Cu and Cu-Cr electrodes,” IEEE Transactions on Dielectrics and Electrical Insulation 10(4), 576582 (2003).
Y. Ito, Y. Yamano, S. Kobayashi et al., “Vacuum electrical breakdown characteristics and surface condition of Ti electrodes with oxidation conditions,” IEEE Transactions on Dielectrics and Electrical Insulation 13(1), 98104 (2006).
K. Kato, Y. Fukuoka, H. Saitoh et al., “Effect of electrode surface roughness on breakdown conditioning under non-uniform electric field in vacuum,” IEEE Transactions on Dielectrics and Electrical Insulation 14(3), 538543 (2007).
Y. Yamano, T. Yoshida, S. Kobayashi et al., “Surface conditions and vacuum breakdown characteristics of titanium electrodes lathed by different cutting tool bits and treated by chemical polishing method,” in XXIVth Int. Symp. On Discharges and Electrical Insulation in Vacuum (Braunschweig, 2010), pp. 4851.
W. J. Wijker, “The electrical breakdown in vacuum,” Appl. Sci. Res., Section B 9, 120 (1960).
N. Zouache and A. Lefort, “Electrical breakdown of small gaps in vacuum,” IEEE Transactions on Dielectrics and Electrical Insulation 4(4), 358364 (1997).
J. M. Torres and R. S. Dharlwal, “Electric field breakdown at micrometre separations in air and vacuum,” Microsystem Technologies 6, 610 (1999).

Data & Media loading...


Article metrics loading...



In this paper, three surface polishing treatments were employed to treat plate titanium electrodes, and microscopic surfaces of the electrodes after polishing were presented. Through comparing the breakdown strength of the 2.5 cm vacuum gap formed by plate titanium electrodes after the three treatments, experimental results showed that the breakdown strength was enhanced by 35% while the micro-surface roughness dropped from 3.5m to 0.35m. In view of that, effects of microstructural parameters after polishing on the microscopic field enhancement factor were investigated. The field-uniformity mechanism and the shield effect between micro-protrusions on the rough electrode surface were put forward and demonstrated. Based on the idea that electric field can be shield in a pit, a theoretical model was established to evaluate the maximum field enhancement factor on the micro-surface. It revealed that 1 ≤ ≤ 3.96, and had the maximum decrements of 1.96 and 2.1 both from 3.96 after the mirror polishing and the chemical polishing, respectively. When the surface roughness decreased to the scale from nm to m, the effort on reduction through surface polishing was not effective to enhance the vacuum gap breakdown strength any more.


Full text loading...


Access Key

  • FFree Content
  • OAOpen Access Content
  • SSubscribed Content
  • TFree Trial Content
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd