Being the focal plane detector assembly of the focal plane

摘要

As for the focal plane detector assembly of the mass spectrometer, in order the ion which appears of the magnet of this mass spectrometer to parallel plane surface to the detector, and this focal plane of the kind of form which detects the ion which crosses the focal plane of this mass spectrometer, before contacting with the above-mentioned ion detector, to pass the above-mentioned mesh, in order to be positioned, the electric conductivity mesh which lies is included. This mesh is maintained low with voltage electric potential vis-a-vis circuit ground, this covers the ion which passes the above-mentioned magnet from high tension electric charge from the other devices like the micro channel plate electron multiplier. This mesh can be installed directly in the above-mentioned magnet, somewhat in the distance which leaves is positioned. Array of the above-mentioned detector, includes Faraday cup detector array, strip electric charge detector array or CCD detector array, it can include the optional appropriate device.