High-Speed Electrodynamic Ribbon Valve for Peripheral Admission of Gas

摘要

Due to the need for a speedier valve for admitting gas into a vacuum chamber in connection with many plasma experiments an investigation is made of a new type of electrodynamic valve. The valve itself is a thin metal ribbon, drawn through an insulating layer against the cylindrical section of the vacuum chamber into which a pulse inlet of gas occurs. The ribbon covers a narrow annular slot (a chain of small holes). Vacuum sealing of the valve is attained by tightening the ribbon by means of a tension device. The valve opens when the ribbon is pulled away by a strong magnetic field. The article describes construction of the valve and the determination of its mechanical characteristics. (Author)