1B-O1-1620 PDF
Development of Ion Mobility System with Multi-stage Ion Trap
We have been developing "Ion Trap Mobility Measurement System". By using the system fine particles are trapped for more than 2 hours with monitoring the structural changes. However, the mobility resolution is low because of the limit of the movement (3 mm). Here we show a newly developed multi-stage ion trap mobility measurement system to improve the resolution. The system consists of a laser ionization source for polystyrene particles, an ion funnel, and a linear ion trap for long movement and ion separation together with a newly developed RF/DC power supply to support the long movement of particles in the trap.