Self-Sputtering Far above the Runaway Threshold: An Extraordinary Metal-Ion Generator
Journal Article
·
· Physical Review Letters
- Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720 (United States)
When self-sputtering is driven far above the runaway threshold voltage, energetic electrons are made available to produce 'excess plasma' far from the magnetron target. Ionization balance considerations show that the secondary electrons deliver the necessary energy to the 'remote' zone. Thereby, such a system can be an extraordinarily prolific generator of usable metal ions. Contrary to other known sources, the ion current to a substrate can exceed the discharge current. For gasless self-sputtering of copper, the usable ion current scales exponentially with the discharge voltage.
- OSTI ID:
- 21180160
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 4 Vol. 102; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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