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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> - Plasma potentialV pl[V]6543210−1(a)0 50 100 150axial position [mm]r = 0 mmr = 20 mmr = 40 mmr = 60 mmV pl[V]6543210−1(b)0 50 100 150axial position [mm]r = 0 mmr = 20 mmr = 40 mmr = 60 mm65 µs230 µsThe spatial variation <strong>of</strong> <strong>the</strong> <strong>plasma</strong> potential at 65 µs and230 µs from <strong>the</strong> <strong>in</strong>itiation for gas pressure <strong>of</strong> 5 mTorr.The pulse is 90 µs long and <strong>the</strong> average power 270 W and<strong>the</strong> target made <strong>of</strong> copper

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