Brief description of embodiments of a photomultiplier tube has to close the multiplier

摘要

Of a photomultiplier tube 10 comprising a body 20 of tube, a photocathode element 30 and an electron multiplier 40 intended to be placed at a short distance from the photocathode 30. According to the invention, the tube 10 of the sliding means 50 of the multiplier 40 of such parallel to the axis 22 of the body 20 of the tube, the means 50 provided with thrust 53 located at close to the ed ris tho 31. It relates in addition, the multiplier 40 of the electrons of the means 60 for welding at a distance of the multiplier of electrons on the said means 50, and, in a first time, the multiplier 40 of electrons is placed at a sufficient distance from the ed ris tho 31, then, in a second time, it is evaporated the constituents of the photocathode with the aid of evaporators 70 placed at a distance from the ed ris tho, and, in a third time, the multiplier 40 of electrons is bring against said thrust 53, while, in a fourth time, the multiplier 40 of electrons is held in position a, close to the photocathode 30 by welding at a distance on the means 50 of the sliding motion with the aid of the means 60 for welding at a distance. / p & & p & application of the photomultiplier tubes a focusing close.