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Langmuir probe study of the plasma parameters in the HiPIMS ...

Langmuir probe study of the plasma parameters in the HiPIMS ...

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<strong>HiPIMS</strong> - Electron energyDur<strong>in</strong>g <strong>the</strong> <strong>in</strong>itial stages <strong>of</strong> <strong>the</strong>pulse Ar + ions dom<strong>in</strong>ate <strong>the</strong>dischargeLater <strong>in</strong> <strong>the</strong> pulse metal ionsbuild up and become <strong>the</strong>abundant ion speciesThe high metal content isexpected to cool <strong>the</strong> EEPFdue to electron impactexcitation and ionization <strong>of</strong><strong>the</strong> metal atoms, that havemuch lower excitationthresholds and ionizationpotential than <strong>the</strong> argonsputter<strong>in</strong>g gasFrom Bohlmark et al. (2006)From Ehiasarian et al. (2002)

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