Cold plasma beam producing device i.e. plasma hand-held device, for microplasma treatment of materials for e.g. cosmetic purpose, has high frequency-generator, coil, body and high voltage-electrode integrally arranged in metal housing

摘要

The device has a metal housing (7) functioning as an earthed electrode (2) in an emergent region of plasma (1). A high frequency-generator (8), a high frequency-resonance coil (5), an insulating body (4) and a high voltage-electrode (3) e.g. spicular electrode, are integrally arranged in the housing so that the generator, the coil, the body and the voltage-electrode are permeated or circulated around by process gas (6) e.g. inert gas. The coil includes a closed ferrite core suitable for high frequency. The body acts as a gas nozzle. The high voltage-electrode is installed in the body.