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Magnetic-field-dependent plasma composition of a pulsed aluminum arc in an oxygen ambient
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology.
Lawrence Berkeley Natl. Laboratory, Berkeley, CA 94720, United States.
High Current Electronics Institute, Russian Academy of Sciences, 634055 Tomsk, Russian Federation.
2001 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 78, no 2, 150-152 p.Article in journal (Refereed) Published
Abstract [en]

A variety of plasma-based deposition techniques utilize magnetic fields to affect the degree of ionization as well as for focusing and guiding of plasma beams. Here we use time-of-flight charge-to-mass spectrometry to describe the effect of a magnetic field on the plasma composition of a pulsed Al plasma stream in an ambient containing intentionally introduced oxygen as well as for high vacuum conditions typical residual gas. The plasma composition evolution was found to be strongly dependent on the magnetic field strength and can be understood by invoking two electron impact ionization routes: ionization of the intentionally introduced gas as well as ionization of the residual gas. These results are characteristic of plasma-based techniques where magnetic fields are employed in a high-vacuum ambient. In effect, the impurity incorporation during reactive thin-film growth pertains to the present findings. © 2001 American Institute of Physics.

Place, publisher, year, edition, pages
2001. Vol. 78, no 2, 150-152 p.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-47484DOI: 10.1063/1.1339847OAI: oai:DiVA.org:liu-47484DiVA: diva2:268380
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2017-12-13

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Schneider, Jochen

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