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Figure 7
The optical emission spectrum of RF plasma irradiation of the toroidal mirror at the beginning (5 s), after 30 min and after 1 h. The image shows the spectrum recorded for the wavelength range of 250 to 900 nm. |
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Figure 7
The optical emission spectrum of RF plasma irradiation of the toroidal mirror at the beginning (5 s), after 30 min and after 1 h. The image shows the spectrum recorded for the wavelength range of 250 to 900 nm. |