Numerical Simulations and the Design of Magnetic Field-Enhanced Electron Impact Ion Source with Hollow Cylinder Structure

Figure 1

(a) Simulation structure of the designed EI ionization source. (b) Electron trajectory (blue lines) simulation of the designed EI ionization source. (c) Ion trajectory (blue lines) simulation of the designed EI ionization source. (d) Potential contours (red lines) and ion focus effect (black lines) in the EI ionization source. (e) Ion optic focus effect in the ionization chamber.

(a)

(b)

(c)

(d)

(e)