Random walk of cathode arc spots in vacuum
Webb21 sep. 2007 · Arc cathode spots in vacuum with Cu cathodes have been registered by combining framing and streak channels of a fast image converter camera equipped with … Webb11 juni 2013 · Abstract: A self-consistent space-resolved numerical model of cathode spots in vacuum arcs is realized on the computational platform COMSOL Multiphysics. …
Random walk of cathode arc spots in vacuum
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Webb22 juli 2024 · An equation governing the evolution of the surface density of the spots or, equivalently, the distribution of macroscopic (averaged over individual spots) current … Webb14 mars 1995 · High-speed emission pictures of arc cathode spots in vacuum have been obtained in a spectrally narrowed range. It has been found that the total radiation was …
Webb21 jan. 1997 · Arc cathode spots in vacuum with Ti- and Cu-cathodes have been studied by using the high-speed framing camera IMACON 468 in the time range down to 10 ns. The … Webb14 sep. 1983 · Abstract The theoretical basis of the random walk movement of cathode arc spots is reconsidered, and the probable causes of some discrepancies in measured spot movement parameters and in their interpretation are discussed. Export citation and abstract BibTeX RIS Previous article in issue Next article in issue References
Webb21 juni 2013 · A variety of approaches have been developed in the literature towards modelling of cathode spots in vacuum arcs. These include space-resolved descriptions based on numerical solution of 1D or 2D partial differential equations, both … Webbof cathodic arcs in vacuum for various cathode arcs [4]. The arcs were generated in a coaxial plasma source and fluctuations of voltage during arc were recorded using a …
WebbThe retrograde motion of arc cathode spots in vacuum - NASA/ADS Experiments are reported on the retrograde arc spot motion on copper and tantalum cathodes in vacuum in the presence of a magnetic field. The spots are imaged with time and space resolutions of <100 ns and <10 µm, respectively.
Webb21 aug. 1998 · Abstract:With a combination of fast framing and streak channels, arc spots on a copper cathode are imaged by glass and UV-optics with /spl mu/m-resolution. At currents of about 70 A and sufficiently long after ignition (3-100 /spl mu/s), the spots reveal an inner fragment structure with sizes 5 /spl mu/m. spanish empire inflation foreign investmentWebb14 mars 1995 · Anders A, Anders S, Hantzsche E, Jüttner B and Ziegenhagen G 1993a Optical investigation of arc cathode spots in vacuum Proc. XXIth Int. Conf. on Phenomena in Ionized Gases, Bochum vol I, pp 3-4. Google Scholar Anders A, Anders S, Jüttner B, Bötticher W, Lück H and Schröder G 1992a Pulsed dye laser diagnostics of vacuum arc … spanish empire british empire mongol empireWebbA first experimental validation of the evaporation-determined arc-cathode coupling (EDACC) model is performed by comparing the experimental and simulated current in the peak current phase of a pulsed gas metal arc welding process. For this, the EDACC model was extended to limit the cathode surface temperature to a realistic value of <2400 K. spanish empire in north americaWebb15 nov. 2000 · The cathode spot movement of a vacuum arc with Al, Cd, Mo and Cu cathodes was investigated. Provided external disturbances are absent the cathode spot … tears of the kingdom press kitWebbThe cathode spot (CS), as the source of arc plasma, plays very important role in maintaining the burning of vacuum arc, particularly, in relatively low current with inactive … spanish empire start and endWebb15 nov. 2000 · In this paper, a two-dimensional statistical model for a single cathode spot of vacuum arc with copper cathode has been established to simulate its random walk … spanish empire in the americasWebb10 sep. 2014 · [61] Djakov B E and Juttner B 2002 Random and directed components of arc spot motion in vacuum J. Phys. D: Appl. Phys. 35 2570–7. Crossref; Google Scholar [62] Shi Z Q, Xiao J, Jia S L, Liu Z G and Wang L J 2007 The influence of gap distance on the random walk of cathode spot in vacuum arc J. Phys. D: Appl. Phys. 40 5924–8. Crossref; … tears of the kingdom pre order numbers