title: Development of a cascade arc discharge source for an atmosphere-vacuum interface device.
abstract: To realize a novel vacuum-atmosphere interface that does not require a large differential pumping system, a robust cascade arc discharge source called a plasma window is constructed and tested for long-term operation. By modifying a test plasma with a direct current discharge, a vacuum interface with a high gas pressure ratio of 1/407 between the discharge and expansion sections is demonstrated for currents as high as 20 A. No significant damage to the electrodes is observed during the operation. Analysis of the visible emission spectra reveals that a stationary, stable argon plasma having a temperature of 1 eV and a density of 1.5 × 10(16) cm(-3) is generated in the plasma channel.
authors: Graduate School of Engineering, Hiroshima University, 1-4-1 Higashihiroshima, Hiroshima 739-8527, Japan.
authors: S
authors: S
authors: Namba
authors: Graduate School of Engineering, Hiroshima University, 1-4-1 Higashihiroshima, Hiroshima 739-8527, Japan.
authors: T
authors: T
authors: Endo
authors: Graduate School of Engineering, Hiroshima University, 1-4-1 Higashihiroshima, Hiroshima 739-8527, Japan.
authors: S
authors: S
authors: Fujino
authors: National Institute for Fusion Science, 322-6 Oroshi-cyo, Toki, Gifu 509-5292, Japan.
authors: C
authors: C
authors: Suzuki
authors: National Institute for Fusion Science, 322-6 Oroshi-cyo, Toki, Gifu 509-5292, Japan.
authors: N
authors: N
authors: Tamura