Abstract: An arrangement for the electrical detection of ions for mass spectroscopic etermination of the mass values and of the mass intensities, in which a channel multiplier plate has a number of electron multipliers of minimum dimension, and is located behind the exit gap of the magnet of the mass spectroscopic device for capturing ions focused in the focal plane of the spectroscopic device. The electrons emanating from the channel multiplier plate and emitted off by ions of different mass in the electron multipliers, are captured and the signals generated by the collected electrons are transmitted to a recorder. Wires located behind and along the channel multiplier plate, capture the electrons and transmit the signals generated by the electrons, to the recorder. The wires are perpendicular to the direction of the electron multipliers, and perpendicular to the lengthwise direction of the exit gap. The wires are isolated from each other and do not contact one another.