Abstract:
A description is given of a coating solution and a method of manufacturing a magnesium-oxide layer on a glass substrate. The layer obtained is characterized by a satisfactory adhesion and a high secondary electron emission coefficient. The curing temperature can remain below 250 °C, so that the method is suitable for the customary types of glass.
Abstract:
A photomultiplier is constituted by a photocathode and an electron multiplier having a typical structure in which a dynode unit having a plurality of dynode plates stacked in an incident direction of photoelectrons, an anode plate, and an inverting dynode plate are sequentially stacked. Through holes (101) for injecting a metal vapor are formed in the inverting dynode plate (13) to form secondary electron emitting layers on the surfaces of dynodes supported by the dynode plates, and the photocathode. With this structure, the secondary electron emitting layers are uniformly formed on the surfaces of the dynodes. Therefore, variations in output signals obtained from anodes can be reduced regardless of the positions of the photocathode.
Abstract:
A method for manufacturing an electron multiplier or microchannel plate (10) comprises the steps of forming a body (12) of etchable material, directionally applying a flux of reactive particles against the body in selected areas for removing material therefrom in order to form at least one electron multiplication channel (14) in the body.
Abstract:
The invention is directed to continuous dynodes formed by thin film processing techniques. According to one embodiment of the invention, a continuous dynode is disclosed in which at least one layer is formed by reacting a vapour in the presence of a substrate at a temperature and pressure sufficient to result in chemical vapour deposition kinetics dominated by interfacial processes between the vapour and the substrate. In another embodiment the surface of a bulk semiconductor or substrate is subjected to a reactive atmosphere at a temperature and pressure sufficient to result in a reaction modifying the surface of the substrate. In yet another embodiment a continuous dynode is formed by liquid phase deposition of a dynode material into the substrate from a supersaturated solution. The resulting devices exhibit conductive and emissive properties suitable for electron multiplication in CEM, MCP and MEM applications.
Abstract:
The invention is directed to continuous dynodes formed by thin film processing techniques. According to one embodiment of the invention, a continuous dynode is disclosed in which at least one layer is formed by reacting a vapour in the presence of a substrate at a temperature and pressure sufficient to result in chemical vapour deposition kinetics dominated by interfacial processes between the vapour and the substrate. In another embodiment the surface of a bulk semiconductor or substrate is subjected to a reactive atmosphere at a temperature and pressure sufficient to result in a reaction modifying the surface of the substrate. In yet another embodiment a continuous dynode is formed by liquid phase deposition of a dynode material into the substrate from a supersaturated solution. The resulting devices exhibit conductive and emissive properties suitable for electron multiplication in CEM, MCP and MEM applications.
Abstract:
A method for manufacturing an electron multiplier or microchannel plate (10) comprises the steps of forming a body (12) of etchable material, directionally applying a flux of reactive particles against the body in selected areas for removing material therefrom in order to form at least one electron multiplication channel (14) in the body.
Abstract:
Le procédé consiste à déposer sur un substrat (2), éventuellement poli, une première couche (44) d'Au ou Pt sous une épaisseur d'environ 200 nm ou plus par pulvérisation cathodique, puis une seconde couche (16) de MgO sous une épaisseur de 2 à 10 nm également par pulvérisation cathodique, le substrat étant constamment maintenu sous atmosphère contrôlée pendant les deux dépôts, ainsi qu'entre ceux-ci.