Abstract
A spot grouping and retrograde motion model based on previous study of the cathode thermal regime and the plasma flow in the near cathode region is proposed. The current per group spot is calculated by assuming that the plasma kinetic pressure is comparable to the self-magnetic pressure in the acceleration region of plasma jet. The results of the calculations indicate a linear increase of the current per spot group and retrograde spot velocity with the magnetic field and arc current, in agreement with previous experiments. The spot retrograde motion in a short gap and at atmospheric pressure arcs and the reversal motion in strong magnetic fields (>IT) observed by Robson and Engel are discussed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
