WASET
	%0 Journal Article
	%A Po-Wen Chen and  Jin-Yu Wu and  Md. Manirul Ali and  Yang Peng and  Chen-Te Chang and  Der-Jun Jan
	%D 2016
	%J International Journal of Physical and Mathematical Sciences
	%B World Academy of Science, Engineering and Technology
	%I Open Science Index 118, 2016
	%T A Statistical Model for the Dynamics of Single Cathode Spot in Vacuum Cylindrical Cathode
	%U https://publications.waset.org/pdf/10005421
	%V 118
	%X Dynamics of cathode spot has become a major part
of vacuum arc discharge with its high academic interest and
wide application potential. In this article, using a three-dimensional
statistical model, we simulate the distribution of the ignition
probability of a new cathode spot occurring in different magnetic
pressure on old cathode spot surface and at different arcing time.
This model for the ignition probability of a new cathode spot was
proposed in two typical situations, one by the pure isotropic random
walk in the absence of an external magnetic field, other by the
retrograde motion in external magnetic field, in parallel with the
cathode surface. We mainly focus on developed relationship between
the ignition probability density distribution of a new cathode spot and
the external magnetic field.
	%P 482 - 485