Daihen Corporation

Shoichiro Minomo

Michio Taniguchi

Shigeki Amadatsu

Kazuki Kondo

A discharge tube is assembled from three sections formed of metal. A first discharge tube element and a second discharge tube element are connected with an insulator for forming a discharging gap and vacuum-sealing interposed between connecting flanges of both discharge tube elements along with an O-ring. The first discharge tube element and a third discharge tube element and a third discharge tube element are connected in a similar manner, and a discharge gap is formed between adjacent discharge tube elements. A high-frequency power supply is connected to each discharge tube element. Respective discharge tube elements are provided with cooling medium flow paths separately each other.

Multi-sectional plasma generator with discharge gaps between multiple elements forming a plasma discharge cavity

A plasma generator according to the invention includes a rectangular waveguide into which a microwave is introduced, a coaxial tube connected in a T shape to the rectangular waveguide through their respective openings, a vacuum sealing window for blocking the openings with an insulator to thereby vacuum seal the interior of the coaxial tube against the rectangular waveguide, and an insulator arranged in the coaxial tube as linked to the vacuum sealing window, thus facilitating microwave matching.

Growing community of inventors

Osaka, Japan

Shoichiro Minomo