Abstract
In view of the limited transmission mass range of conventional ion funnel, a new method of ion funnel driven by square wave was proposed in this paper. Series of simulations were produced by using the SIMION to compare the transmission efficiency of ion funnel driven by square wave and sine wave respectively. Results showed that the transmission mass range of ion funnel driven by square wave can be wider than ion funnel driven by sine wave. Transmission efficiency of ion funnel driven by square wave can be greatly improved at high mass level, and nearly the same at low mass level.
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