Modelling of a linear ion trap operation in the second stability region

Ion trajectory numerical simulation is used to find the linear ion trap excitation contour in the second stability region. The effects of initial conditions, the ejection Mathieu parameter, scan speed, dipole excitation voltage and gas damping are studied. Modeling shows that in the stability region center the resolution power is 200 000 (at full width half height of a peak, FWHM) at pressure 0.1 mTorr and 100 % excitation efficiency (not taking into account the space charge).

Automated summary

Ion trajectory numerical simulation is used to study the effects on linear ion trap excitation contour and find that high resolution and excitation efficiency can be achieved under certain conditions.