Hollow oval magnetron for large-area low-energy ions

Lin I, Ming Shing Wu

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


A novel device, the "hollow oval magnetron," was designed and characterized. The device has a hollow electrode with an oval cross section. It sustains a large-area uniform plasma with low-energy ions under low pressure and moderate rf power (Ni ∼1011 cm -3, Γi ∼0.5 mA/cm2, E i ∼30 eV, and P∼5 mTorr). The energy distribution of ion current onto the hollow electrode has a broad spread ΔEii ∼1 in the rf mode, and a narrow peak ΔE i/ Ēi ∼0.1 with a low-energy tail in the dc mode. The device is a good candidate for low-energy high-rate plasma-material processing.

Original languageEnglish
Pages (from-to)1949-1951
Number of pages3
JournalJournal of Applied Physics
Issue number6
StatePublished - 1986


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