NDLI: Simulation of pulsed electropositive and electronegative plasmas

Content Provider	IEEE Xplore Digital Library
Author	Boswell, R.W. Vender, D.
Copyright Year	1973
Abstract	A particle-in-cell (PIC) code with nonperiodic boundary conditions, including ionization and ion motion, is used to simulate the approach to equilibrium and the decay in the postdischarge of model electropositive and electronegative plasmas in a symmetric RF diode. In the electropositive plasma the density decreases to 1/e in approximately 10 mu s. The electronegative ion plasma density is about four times higher and decreases to 1/e in approximately 50 mu s, with the electron temperature and density decreasing to zero in a few microseconds. During this latter time scale, a weak field is set up to drive the negative ions to the boundaries at the same rate as the ion diffusion velocity. In the postdischarge this is close to thermal, hence some hundreds of microseconds are required to remove most of the negative ions from the system. As negative ions are thought to be the precursors for particulate formation, plasmas pulsed at around 1 kHz will severely decrease the lifetime of the negative ions and thereby reduce the possibility of particulate growth.<>
Sponsorship	IEEE Nuclear and Plasma Sciences Society
Starting Page	141
Ending Page	143
Page Count	3
File Size	292970
File Format	PDF
ISSN	00933813
Volume Number	19
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1991-04-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Plasma simulation Plasma density Plasma applications Plasma temperature Electrons Plasma sheaths Radio frequency Plasma accelerators Ionization Boundary conditions
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Condensed Matter Physics

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