NDLI: Ion flow and sheath physics studies in multiple ion species plasmas using diode laser based laser-induced fluorescence

Content Provider	Semantic Scholar
Author	Severn, Greg Wang, Xu feng Ko, Eunsuk Hershkowitz, Noah Turner, M. M. McWilliams, Roger
Copyright Year	2006
Abstract	Abstract Diode lasers have proved to be a valuable light source for laser-induced fluorescence (LIF) measurements for plasma science since the early 1990s, and they have recently improved the state of the art of measuring ion flow from ion velocity distribution functions (ivdfs) at the sheath–presheath boundary in single and multiple ion species plasmas. In the case of a low temperature two ion species plasma (ArI + HeI), we were the first to show experimentally that ion species may reach the sheath edge flowing at a very different speed than that expected from the single species Bohm Criterion (ArII ions exceed the individual Bohm flow speed by almost a factor of 2 at the sheath edge). Simulation results are found to agree. Diode laser technology relevant to LIF measurements in multiple ion species plasmas is discussed with the aim of addressing outstanding problems in sheath formation in such plasmas.
Starting Page	674
Ending Page	678
Page Count	5
File Format	PDF HTM / HTML
DOI	10.1016/j.tsf.2005.08.114
Volume Number	506
Alternate Webpage(s)	https://escholarship.org/content/qt4161c448/qt4161c448.pdf?t=p19k3x
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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