| Paper | Title | Page |
|---|---|---|
MOPA05 |
X-ray Diagnostic of High-current Low-energy Electron Beam in Plasma | |
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| Low-energy high-current electron beams are used in a novel technology for surface modification of metallic materials. Propagation high current electron beam in plasma give possibility for much current increasing. Direct diagnostic by a Faraday cup in plasma is incorrect. Therefore we used for beam diagnostic X-ray radiation from a metal target. The electron beam was creating by a cold-cathode magnetron injection gun. The gun voltage was nearly 20 kV. The target current was up to 20 kA. We observed X-ray radiation by its transformation in visible light. Plastic scintillators were used for high time resolution. A cross section of beam and time dependences was obtained too. For time dependence resolution was used digital oscillograph Tektronix. Photomultiplier tubes were used for light detection. Their signal was write together with target current by the Faraday cup and visible light emission. We observed in oscillograms X-ray radiation without target current and target current without X-ray radiation with duration up several microseconds. The diagnostic method will be use for next improvement cold-cathode magnetron injection gun as source of low-energy high-current electron beam. | ||