Space-angle focusing reflector for time-of-flight mass spectrometers

摘要

The device consists of annular and terminating apertures, whereby voltages in the apertures provide the required potential for ion reflection. The field between the last annular aperture and the terminating aperture is made weaker than the fields between the preceding reflector apertures by altering the voltage or distance or by the shape of the terminating aperture. AN Independent claim is also included for the following: a method of setting the focal length of spatial angle focusing in an inventive device.