This example demonstrates a very powerful option included into SIMAX Pro package – a detection of the image current from the ions trapped by an orbitrap.

An outer barrel-like electrode and a coaxial inner spindle-like electrode create an electrostatic potential well, which traps ions in an orbital motion around the spindle electrode.

The image current from the trapped ions is detected and converted to a mass spectrum using the Fourier transform of the frequency signal.

In this demo we don’t follow the geometry of a real Orbitrap ion trap analyser commercially produced by Thermo Fisher Scientific.

The electric field and electrodes in the present example are generated based on the theory of the hyper-logarithmic fields.

The field is generated using the above equation for K = 1000 V and R = 20 mm. The model has been created with the grid step of 0.02mm.The gap between the outer electrodes is 0.2 mm.