Low-Vacuum Quadrupole Mass Filter Using a Drift Gas

Table 1

Simulation parameters for low-vacuum mass spectrometry.

Parameters	Value
Length of the mass filter (L)	80 mm
Radius of the mass filter (r0)	5 mm
Ion mass (mi)	40 amu
Background gas molecular mass (mg)	10 amu
Background pressure (p)	——
Drift flow rate at inlet (V0)	0 L/min
Initial kinetic energy of ions (Ei)	5 eV
DC component of RF voltage (U)	85 V
Amplitude of RF voltage (V)	1080 V
Frequency of RF voltage (ω)	4 MHz