The structure of electrodes, the concentration of the photomultiplier tubes

摘要

According to the invention, the electrodes of concentration, 34, 36, 38 are placed between the photocathode 16 and the first dynode 20 of the tube and are configured in the sections of a dome in sphérode, the smaller opening being the closest to the photocathode. / p & & p & the invention applies in particular to the discharge tubes of electrons.