Abstract: There is provided a desalination system capable of monitoring a situation of a semipermeable membrane element in real time.

Abstract: A sealed neutron tube is provided, in which an insulating structure is designed to be solid to enhance the shock-proof performance thereof, an ion beam drawn out from an ion source is pulsated more rapidly, and the lifetime of a target is increased without substantially increasing the filling amount of the Tritium. The sealed neutron tube (1) includes a metal housing (20), an ion source (5) disposed and sealed within the metal housing for ionizing a Deuterium gas, an accelerating electrode (4) charged with a high voltage, disposed and sealed within the metal housing and facing the ion source, and a target (3) disposed within the accelerating electrode and absorbing Tritium and the like therein. An outer wall (20) is constructed by a metal housing, and a ceramic insulating member (11) is disposed within the metal housing. Since the accelerating electrode is held by this insulating member, the outer wall of the sealed neutron tube has enhanced shock-proof performance.

Abstract: This invention relates to an electrostatic high-voltage generator in which an electrostatic charge is transported mechanically and is stored on a high-voltage electrode, and plural layers of charge carrier unit for carrying electrostatic charges, are stacked in a direction at right angles with the direction of carrying the charge, and there is provided between respective adjacent ones of those charge carrier units, a charge carrying transfer means for carrying an electric charge carried to the adjacent charge carrier unit. The apparatus can generate an ultra high-voltage and can be constructed economically into a small-sized one.