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We evaluated the characteristics of Sn debris generated by a CO2 laser (10.6μm) produced plasma. Experiments were
performed with bulk Sn-plate targets and Mo/Si multilayer mirror samples were used for debris analysis. We observed
very thin and uniform Sn layers of nano/sub-nano size debris particles. The layer deposition rate at 120mm from the
plasma is, without magnetic field, about 30nm per million shots. The fundamental magnetic field effect has been
confirmed experimentally. The fast Sn ion flux was measured with Faraday cups and the signal decreased by more than 3
orders of magnitude applying a magnetic field of 1T. The Sn deposition on the Mo/Si multilayer mirror decreased in this
case by a factor of 4. The contribution of the remaining neutral Sn particles is under study in order to decrease the
deposition rate.
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