3results about "Multiplier electrode arrangements" patented technology

In a photoelectric conversion device, the potential control unit controls electric potentials applied to the meta-surface. The meta-surface includes a plurality of patterns which are space away from each other. The plurality of patterns include an antenna portion and at least one bias portion. The antenna portion extends in a predetermined direction and emits the electron in response to incidence of the electromagnetic wave. The potential control unit switches a first state and a second state by controlling the electric potentials applied to the plurality of patterns. In the first state, a component of an electric field from the bias portion toward the antenna portion in a predetermined direction is positive. In the second state, a component of an electric field from the bias portion toward the antenna portion in the predetermined direction is negative.

The invention relates to the technical field of electronic detection and signal amplification, in particular to a high-performance multi-channel arc channel type electron multiplier, which comprises an electronic input end used for receiving and focusing incident particles; the partition area is used for establishing a potential gradient; the alloy coating electrodes are respectively arranged at the input end and the output end of the electron multiplier and are used for applying working voltage; the multi-channel arc-shaped array structure comprises a plurality of arc-shaped channels which take the center of the section of the electron multiplication area tube body as the circle center and are uniformly arranged on the same circumference, and the arc-shaped channels are parallel to one another; the voltage division area is used for stabilizing electric field distribution in the channel; compared with the prior art, the high-gain and high-resolution collaborative improvement is realized, the high-temperature-resistant stability is excellent, the working life is ultra-long, meanwhile, low noise, quick response and efficient signal detection are achieved, the performance reaches the import standard, and a reliable core component is provided for localization of high-end instruments.

The invention discloses a long-life micro-channel plate type photomultiplier, and solves the problems that a micro-channel plate type photomultiplier is short in service life, and an existing long-life micro-channel plate type photomultiplier is high in preparation threshold and high in cost. According to the invention, an atomic layer deposition coating technology is adopted, a metal oxide film layer is coated on a traditional lead-containing glass microchannel plate, and a positive ion blocking electrode is arranged between a photoelectric cathode and a lead-containing microchannel plate assembly, so that in the process of moving towards the photoelectric cathode, the metal oxide film layer is coated on the metal oxide film layer; the positive ions are pressed back to the lead-containing micro-channel plate assembly under the action of an electric field in the direction from the positive ion blocking electrode to the lead-containing micro-channel plate assembly, and do not move to the photoelectric cathode, so that the photoelectric cathode is prevented from being damaged, and the service life of the micro-channel plate type photomultiplier can be prolonged.