Analysis of plasma critical flow in a combined discharge capillary ablative pipe system

S. Cuperman*, D. Zoler, J. Ashkenazy

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


The system of a high pressure discharge capillary connected to an ablative pipe is shown here to be an efficient and convenient plasma source. The characteristics of the source (mass and energy fluxes) are determined by the joule energy supplied to the discharge section as well as by the wall material and geometrical parameters of the discharge capillary and the ablative pipe. For a given wall material and fixed geometrical characteristics of the capillary, a large range of exit plasma parameters values can be obtained by varying either the length of the ablative pipe or the electrical current carried by the discharge. Useful information for the design of the proposed plasma source is given. It is based on consistent numerical solution of the quasi one-dimensional continuity momentum and energy equations with non-ideal state equation and non-uniform ionization degree for the combined discharge unit and ablative pipe.

Original languageEnglish
Article number017
Pages (from-to)593-601
Number of pages9
JournalPlasma Sources Science and Technology
Issue number4
StatePublished - 1994


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